main/lk2nd: make all subpackages install the same file (MR 2638)

We should always install lk image as /boot/lk2nd.img, even for
image with appended DTB (lk2nd-appended-dtb.img). pmbootstrap tooling
will expect it this way, and also it keeps all subpackages consistent,
while also making them conflict with each other.

Add new subpackages that are explicitly named -appended, but still
install the same file.

Each device should "know" which kind of LK image it needs and should
explicitly depends on specific variant.

Having only one file `/boot/lk2nd.img` will simplify many things,
for example we don't have to introduce new deviceinfo properties
to specify which image is needed (like if we installed both of them).

Signed-off-by: Alexey Minnekhanov <alexeymin@postmarketos.org>

main/lk2nd/APKBUILD

 # Maintainer: Alexey Minnekhanov <alexeymin@postmarketos.org>
 pkgname=lk2nd
 pkgver=0.10.0
-pkgrel=1
+pkgrel=2
 pkgdesc="Secondary little kernel (lk) bootloader for several Qualcomm devices"
 arch="armv7 aarch64"
 url="https://github.com/msm8916-mainline/lk2nd"
-license="MIT"
+license="MIT AND GPL-2.0-only"
 makedepends="dtc dtc-dev gcc-arm-none-eabi python3 py3-libfdt"
 source="$pkgname-$pkgver.tar.gz::https://github.com/msm8916-mainline/lk2nd/archive/refs/tags/$pkgver.tar.gz"
 options="!check !archcheck !tracedeps !strip pmb:cross-native"
@@ -18,8 +18,9 @@ options="!check !archcheck !tracedeps !strip pmb:cross-native"
 
 subpackages="
 	$pkgname-msm8916
+	$pkgname-msm8916-appended:msm8916_appended
 	$pkgname-msm8974
-	$pkgname-msm8226
+	$pkgname-msm8226-appended:msm8226_appended
 "
 
 build() {
@@ -53,14 +54,19 @@ msm8916() {
 		"$subpkgdir"/boot
 }
 
+msm8916_appended() {
+	install -Dm644 "$builddir"/build-msm8916-secondary/lk2nd-appended-dtb.img \
+		"$subpkgdir"/boot/lk2nd.img
+}
+
 msm8974() {
 	install -Dm644 "$builddir"/build-msm8974-secondary/lk2nd.img -t \
 		"$subpkgdir"/boot
 }
 
-msm8226() {
+msm8226_appended() {
 	install -Dm644 "$builddir"/build-msm8226-secondary/lk2nd-appended-dtb.img \
-		-t "$subpkgdir"/boot
+		"$subpkgdir"/boot/lk2nd.img
 }
 
 sha512sums="