xiaomi-beryllium: new device (MR 1156)

xiaomi-beryllium: update checksums

xiaomi-beryllium: set mainline pkgver to 5.2.0

fix linter

xiaomi-beryllium: add firmware package

firmware-xiaomi-beryllium: fix linting warnings

firmware-xiaomi-beryllium: fix linting warnings

xiaomi-beryllium: set rootfs sector size to 4096

xiaomi-beryllium: fix deviceinfo checksum

Apply suggestion to device/testing/device-xiaomi-beryllium/deviceinfo

Apply suggestion to device/testing/device-xiaomi-beryllium/deviceinfo

xiaomi-beryllium: unquote pkgnames

xiaomi-beryllium: fix checksums

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