xiaomi-willow: new device

Works: UART, though it's a pain to solder SSH over usb-c to ethernet adapter Weston on gallium msm_drm Touchscreen, with nonfree firmware

Doesn't: RNDIS (not sure why) Wifi, bt, gpu, etc.

Working on wiki page now.

device/testing/device-xiaomi-willow/APKBUILD

+# Maintainer: Eli Riggs <eli@rje.li>
+# Reference: <https://postmarketos.org/devicepkg>
+pkgname=device-xiaomi-willow
+pkgdesc="Xiaomi Redmi Note 8T"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="aarch64"
+options="!check !archcheck"
+depends="postmarketos-base linux-xiaomi-willow mkbootimg mesa-dri-gallium"
+makedepends="devicepkg-dev"
+subpackages="
+	$pkgname-nonfree-firmware:nonfree_firmware
+	$pkgname-weston
+"
+source="
+	deviceinfo
+	modules-load.conf
+	weston.ini
+	weston-fixes.sh
+"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+nonfree_firmware() {
+	pkgdesc="Touchscreen firmware"
+	depends="firmware-xiaomi-willow"
+	mkdir "$subpkgdir"
+}
+
+weston() {
+	install_if="$pkgname weston"
+
+	# weston use drm backend, 2x dpi, don't use virtual output
+	install -Dm644 "$srcdir"/weston.ini \
+		"$subpkgdir"/etc/xdg/weston/weston.ini
+
+	# weston msm_drm hax
+	install -Dm755 "$srcdir"/weston-fixes.sh \
+		"$subpkgdir"/etc/X11/xinit/xinitrc.d/00-xiaomi-willow-weston-fixes.sh
+}
+
+sha512sums="333eafbe258ddc5948e3ae3edb072a03d4ef19b6d89a7abdb8ca0067b95c4772fbdac4dbf4019ae0c354e5f676b55a6c7e52f159c25eaa8f9353dc05a1e23080  deviceinfo
+1689a1294cfca52351f384324a0fc17ccfa520e33d9d8c616e6a000cc44273b72ca560f1407886e105cdb60282a6f096262e1499eb46ebd0c470599cfe639442  modules-load.conf
+4fdc188f9cd5c0316959322568916a6e36e67ff316e90fa7bd7c7b642cb137a9ff7002b0475728c6ba53abcbfe8c50d82112e4943460ee424aee4bbfd0efecfe  weston.ini
+2ecdd4f25c1047071f8f300d177bc1c288e7af6d05c0f2fa821f722494c92381416ee7969d7d4a7aff7eb7c4fa18d988b7a12bd3ba769022fd95987ca3b5f065  weston-fixes.sh"