oneplus-billie2: new device (OnePlus Nord N100)

So far the debug-shell in initfs works. The device uses dynamic partitions, so that has to be figured out to get a proper rootfs.

One thing to look out for is that mount_subpartitions task in initfs hangs, so pmos_boot=sth was added to kernel cmdline to skip it. This is also related to dynamic partitions, btw.

device/testing/device-oneplus-billie2/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname=device-oneplus-billie2
+pkgdesc="OnePlus Nord N100"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="aarch64"
+options="!check !archcheck"
+depends="postmarketos-base linux-oneplus-billie2 mkbootimg"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="ff8ad6324809de35a146bd3186ba5c607a56bb6bf2c279987a958afdcda7899a640fe1147b7faf242ad18f3d5af368c43cc4ece5847912f9f8cd3d2daf1e6467  deviceinfo"