xiaomi-onclite: new device

This MR add initial support for Redmi 7 (onclite) there are multiple PR for support this device so it cannot be merged yet.

What works

• Audio (except speaker, it needs UCM configuration)

• Jack Detection (Headset Mic detection is not working)

• LED

• USB

• Display/Touch

• GPU

• Modem (Not tested yet)

• Wifi/BT

• Buttons

• SD Card Reader

• Vibrator

• lk2nd: https://github.com/msm8953-mainline/lk2nd/pull/53 Merged

• panel drivers: https://github.com/msm8953-mainline/linux-panel-drivers/pull/6 Merged

• kernel: https://github.com/msm8953-mainline/linux/pull/124 Merged