acer-picasso: new device (Acer Iconia Tab A500) (MR 1308)

Everything is working well, but the camera the 3D acceleration are not.
These two are due to the lack of drivers in mainline kernel.

device/testing/device-acer-picasso/APKBUILD

@@ -0,0 +1,32 @@
+# Reference: <https://postmarketos.org/devicepkg>
+pkgname=device-acer-picasso
+pkgdesc="Acer Iconia Tab A500"
+pkgver=1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="armv7"
+options="!check !archcheck"
+depends="postmarketos-base linux-postmarketos-grate mkbootimg mesa-git-dri-gallium xf86-video-opentegra"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+subpackages="
+	$pkgname-nonfree-firmware:nonfree_firmware
+"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+nonfree_firmware() {
+	pkgdesc="Acer Iconia Tab A500 WiFi & BT firmware"
+	depends="firmware-acer-picasso"
+	install="$pkgname-nonfree_firmware.post-install $pkgname-nonfree_firmware.pre-#deinstall"
+	mkdir "$subpkgdir"
+}
+
+sha512sums="cd87bce7bceac5f857a38113ee6be68822c234b4da54be6a52a7acfa009930870b4968efcc5745a8d906f35f2f9fa0ae7e8f04424cce15f1537d3b946f126a6d  deviceinfo"

device/testing/device-acer-picasso/deviceinfo

@@ -0,0 +1,34 @@
+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Acer Iconia Tab A500"
+deviceinfo_manufacturer="Acer"
+deviceinfo_codename="acer-picasso"
+deviceinfo_year="2011"
+deviceinfo_dtb_downstream=""
+deviceinfo_dtb_mainline="tegra20-acer-a500-picasso"
+deviceinfo_append_dtb_mainline="true"
+deviceinfo_modules_initfs=""
+deviceinfo_arch="armv7"
+
+# Device related
+deviceinfo_chassis="tablet"
+deviceinfo_keyboard="false"
+deviceinfo_external_storage="true"
+deviceinfo_screen_width="1280"
+deviceinfo_screen_height="800"
+deviceinfo_dev_touchscreen="/dev/input/event1"
+
+# Bootloader related
+deviceinfo_flash_method="fastboot"
+deviceinfo_kernel_cmdline=""
+deviceinfo_generate_bootimg="true"
+deviceinfo_bootimg_qcdt="false"
+deviceinfo_flash_offset_base=""
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_pagesize="2048"
+deviceinfo_flash_fastboot_max_size="700"

device/testing/firmware-acer-picasso/APKBUILD

@@ -0,0 +1,25 @@
+pkgname=firmware-acer-picasso
+pkgver=3
+pkgrel=0
+pkgdesc="Firmware for Acer Iconia Tab A500 (acer-picasso)"
+url="https://github.com/grate-driver/linux-firmware"
+arch="armv7"
+license="custom:proprietary"
+options="!check !strip !archcheck !spdx"
+
+# Sources
+_commit="803fa8cce4e6aab3c97473c9dbab9abc49894cb7"
+_url="https://github.com/grate-driver/linux-firmware"
+source="$pkgname-$_commit.tar.gz::$_url/archive/$_commit.tar.gz"
+
+package() {
+	# Wi-Fi & BT firmware
+	cd "$srcdir/linux-firmware-$_commit/brcm/"
+	install -Dm644 brcmfmac4329-sdio.bin \
+		"$pkgdir"/lib/firmware/postmarketos/brcm/brcmfmac4329-sdio.bin
+	# Firmware configuration
+	install -Dm644 brcmfmac4329-sdio.acer,picasso.txt \
+		"$pkgdir"/lib/firmware/postmarketos/brcm/brcmfmac4329-sdio.acer,picasso.txt
+}
+
+sha512sums="5b0cdcea8edb09db9fca95eae8a77f34ad0164e06106a52ef1f4e801fbed873467f14edd14513d28c571d28e0a61bb74a345f1acc91d41104e9e1751ae8418e6  firmware-acer-picasso-803fa8cce4e6aab3c97473c9dbab9abc49894cb7.tar.gz"

device/testing/linux-postmarketos-grate/APKBUILD

@@ -0,0 +1,60 @@
+_flavor=postmarketos-grate
+_commit="79c504641f2f2cecc4e345b5a2890f82d12d6a11"
+_config="config-$_flavor.armv7"
+
+pkgname=linux-postmarketos-grate
+pkgver=5.8.0
+pkgrel=0
+arch="armv7"
+pkgdesc="Linux kernel with experimental patches for Tegra"
+url="https://postmarketos.org"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev
+	     devicepkg-dev bison flex openssl-dev xz findutils"
+options="!strip !check !tracedeps pmb:cross-native"
+source="
+	$pkgname-$pkgver-$_commit.tar.gz::https://github.com/grate-driver/linux/archive/$_commit.tar.gz
+	$_config
+"
+license="GPL-2.0-only"
+
+_carch="arm"
+
+_ksrcdir="$srcdir/linux-$_commit"
+
+prepare() {
+	default_prepare
+	mkdir -p "$srcdir"/build
+	cp -v "$srcdir"/$_config "$srcdir"/build/.config
+	make -C "$_ksrcdir" O="$srcdir"/build ARCH="$_carch" \
+		olddefconfig
+}
+
+build() {
+	cd "$srcdir"/build
+	unset LDFLAGS
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine"
+}
+
+package() {
+	install -Dm644 "$srcdir/build/arch/$_carch/boot/"*zImage \
+		"$pkgdir/boot/vmlinuz-$_flavor"
+
+	install -D "$srcdir/build/include/config/kernel.release" \
+		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"
+
+	cd "$srcdir"/build
+
+	local _install
+	case "$CARCH" in
+	aarch64*|arm*)	_install="modules_install dtbs_install" ;;
+	*)		_install="modules_install" ;;
+	esac
+
+	make -j1 $_install \
+		ARCH="$_carch" \
+		INSTALL_MOD_PATH="$pkgdir" \
+		INSTALL_DTBS_PATH="$pkgdir/usr/share/dtb"
+}
+sha512sums="a678be8e466400b57266dca856f28274c00e9d3d1ebcfe1a142b64c1e88754d6fcd04587664f65c464028e898382e30faf49c8ecc04f7e076323163d0a2fa519  linux-postmarketos-grate-5.8.0-79c504641f2f2cecc4e345b5a2890f82d12d6a11.tar.gz
+46dd50c6ba8fd01bf6a69f5b907da40c47c0412466fbb80f5aa79f3f9bd424bd609ecee11dd557d12649759be626aa4dd37071585b8ce0e026d48be1f4612d0c  config-postmarketos-grate.armv7"