librecomputer-solitude: new device (MR 4467)

Tested on the V0.2 variant of the hardware which comes with some U-Boot
build preinstalled. I don't know if this will be the case for the final
version that will be shipped to customers, but the announecment would
imply so given that it says the device "incorporates a advanced [sic]
BIOS compatible with UEFI".

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

device/testing/device-librecomputer-solitude/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+# Maintainer: Newbyte <newbyte@postmarketos.org>
+pkgname=device-librecomputer-solitude
+pkgdesc="Libre Computer AML-S905D3-CC"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="aarch64"
+options="!check !archcheck"
+depends="
+	linux-postmarketos-amlogic
+	postmarketos-base
+	soc-amlogic-s905
+"
+makedepends="devicepkg-dev"
+source="
+	deviceinfo
+	modules-initfs
+	"
+subpackages="$pkgname-nonfree-firmware:nonfree_firmware"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+nonfree_firmware() {
+	pkgdesc="vdec firmware"
+	depends="linux-firmware-meson"
+	mkdir "$subpkgdir"
+}
+
+sha512sums="
+8349aa8a457c8effe4606e6e5030f910319436b3a99b024bb73c10c1de8a453348fd3b1859082850132348e30f9f33001d102b85ded2ea7afc23cea0e983d9a5  deviceinfo
+52948c2884a6f6384e12b7a598f70878526d0d3293c214425170145231144ec7de805c038641741a4a5d75b50e554f6a3fa3769784a674217ed032f9b6a233c8  modules-initfs
+"

device/testing/device-librecomputer-solitude/deviceinfo

+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell
+# scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Libre Computer AML-S905D3-CC"
+deviceinfo_manufacturer="Libre Computer"
+deviceinfo_codename="librecomputer-solitude"
+deviceinfo_year="2023"
+deviceinfo_dtb="amlogic/meson-sm1-s905d3-libretech-cc"
+deviceinfo_arch="aarch64"
+
+# Device related
+deviceinfo_chassis="embedded"
+deviceinfo_keyboard="false"
+deviceinfo_external_storage="true"
+deviceinfo_gpu_accelerated="true"
+
+# Bootloader related
+deviceinfo_flash_method="none"
+deviceinfo_generate_extlinux_config="true"
+deviceinfo_kernel_cmdline="console=null"

device/testing/device-librecomputer-solitude/modules-initfs

+meson_drm
+meson_dw_hdmi
+display_connector