tolino-shine2hd: add firmware dependency (MR 3810)

Add the firmware for the CyberTan WC121.
Configuration is added in the newest firmware-linux release, so
complete support will appear in the corresponding Alpine package soon.

[ci:skip-build]: already built successfully in CI

device/testing/device-tolino-shine2hd/APKBUILD

@@ -1,8 +1,8 @@
 # Reference: <https://postmarketos.org/devicepkg>
 pkgname=device-tolino-shine2hd
 pkgdesc="Tolino Shine 2 HD"
-pkgver=0.3
-pkgrel=1
+pkgver=0.4
+pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
 arch="armv7"
@@ -16,6 +16,7 @@ depends="
 	u-boot-tools
 "
 makedepends="devicepkg-dev"
+subpackages="$pkgname-nonfree-firmware:nonfree_firmware"
 
 source="
 	deviceinfo
@@ -33,6 +34,12 @@ package() {
 	install -Dm644 "$srcdir/boot.scr" "$pkgdir/boot/boot.scr"
 }
 
+nonfree_firmware() {
+	pkgdesc="Wifi firmware"
+	depends="linux-firmware-brcm"
+	mkdir "$subpkgdir"
+}
+
 sha512sums="
 525a4cd444cc450b3ea62ade25ba9f807f603a0f2a551e4ae40cc9065d82339ccdf9fd0d0f0625a066a3b83c441d7b5dc24cdd384b7cf5d9cfd8369627768f47  deviceinfo
 3b5c33ffa9b81d55451fd4fa0c9ed69149304b88fb85752cead4d34b5467112029cc4883a91e7daa38f8cba55d90a814711b2c55a8d462d115b62f752ce311b7  uboot-script.cmd