huawei-cameron: Add Huawei Mediapad M5 pro device

Add support for the Huawei Mediapad M5 pro. The device boots, USB networking is available and the display does also work, even though the default display brightness seems to be zero. More Information can be found in the wiki.

device/device-huawei-cameron/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-huawei-cameron"
+pkgdesc="Huawei Mediapad M5 Pro"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="aarch64"
+options="!check !archcheck"
+depends="postmarketos-base linux-huawei-cameron mkbootimg mesa-dri-swrast msm-fb-refresher"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="d4030d9cf05b273b80d7464b0cf8cd841ba6be7178e823be6fe654c4748593019f35a00913515a0ecfc8ce9c727c1b30094af32e63fcfa387d47a0fe2af33f0a  deviceinfo"