postmarketos-mkinitfs: don't fail without deviceinfo [skip ci] (#1269)

When building device packages, the postmarketos-mkinitfs package gets
installed as dependency of postmarketos-base. It must not try to
create an initramfs at this point, when there is not deviceinfo file.

We build the initramfs during the installation, so it's fine.

Added [skip ci] because linux kernels and KDE updates are currently
getting built for the binary repository (so Travis couldn't finish
anyway).

main/postmarketos-mkinitfs/APKBUILD

@@ -1,5 +1,5 @@
 pkgname=postmarketos-mkinitfs
-pkgver=0.5.10
+pkgver=0.5.11
 pkgrel=0
 pkgdesc="Tool to generate initramfs images for postmarketOS"
 url="https://github.com/postmarketOS"
@@ -24,4 +24,4 @@ package() {
 }
 sha512sums="500c1e903ca9cf5dfe0102414b086643379d51d848e15eeed89da8ba9f3a286dfba139a29b8312a0df005e159a54ad08c84e078b7d70e6873cabb7d0abda4807  init.sh.in
 eca1e4647494556be52b3eecffe2db75735006a6c53e8778630949808aabc464281ffa75a8744e22a5512c2de1eb5f92f9eb377a55ca4a7402ba8cc0705df83d  init_functions.sh
-0a4a157f6d314f4c9e6e6feb7144c5bf83af48762fa3649007a84cb25736b03248f9dcf928c1653aee72df9e3f87a26d084226b4a754804867f387bdf6768e48  mkinitfs.sh"
+c9b6dd04413509185f74b3d97bc01c97f8b9392e2f0dbccbd9c968efb7d375236b30337bd1637c467816c44d1c40feb354fe7206ac99faed0e1b207a30758cd0  mkinitfs.sh"

main/postmarketos-mkinitfs/mkinitfs.sh

@@ -3,8 +3,10 @@
 source_deviceinfo()
 {
 	if [ ! -e "/etc/deviceinfo" ]; then
-		echo "ERROR: Missing /etc/deviceinfo!"
-		exit 1
+		echo "NOTE: deviceinfo (from device package) not installed yet," \
+			"not building the initramfs now (it should get built later" \
+			"automatically.)"
+		exit 0
 	fi
 	. /etc/deviceinfo
 }