DerpFest: Beryllium: 07/09/2021 Update

* Upstreamed ReX Kernel to latest linux tag v4.9.281

* Remove power button press fp unlock toggle (it sometimes fails to unlock)

* PixelPropUtils: Update apps and remove force build fingerprint

* Don't spoof props in recovery mode

* Add EROFS (Enhanced Read*Only File System) support for Android build system

* Implement Clear All Icon Styles

* Settings: Improve A12-styled Searchbar layout

* Add Sensors Off QS Tile

* GamingMode: Limit the button coordinate to the inside of screen only

* LockscreenCharging: Show Celsius by default

* Fix default value mismatch with derpquest in artwork media background

* Clocks: Use correct thumbnail for Android S clock

* MiuiCompactPanel: Set tap target size back to 46dip

* Fix reading /proc/locks when lock is held by another process

* Set device name to marketname if available

* Enable USAP for all devices

* OmniJaws: Update OpenWeatherMap API

* Override host metadata to avoid leaking info

* Fix wfd-legacy prop neverallow

* Some optimizations from upstream

* Include makefile with art definitions