Xiaomi Pad 8 Pro: first XNU boot from RAM (OnePlus 13T base) (xiaomi-pad-8-pro-development)

xiaomi-pad-8-pro-development/android_device_xiaomi_piano-unixnu

Complete and validate porting.toml in the device repository to publish its subsystem record.

xiaomi-pad-8-pro-development/android_device_xiaomi_piano-unixnu: components without an area: ['BootProgress', 'NativeAES', 'NativeKeyStoreEvents', 'NativeMobileDisplay', 'NativePrelink', 'NativeRamBlock', 'NativeUfs', 'NativeVirtioBlock', 'PaganiArmCpu', 'PaganiArmDTPlatform', 'PaganiDarwinBoot', 'PaganiVerifiedRoot', 'ShengPlatformPower', 'Sm8750Platform', 'Stage7Probe']