Android 12 support needs testing

[ypid]

Just to let you know, I started development with the intent to get Android 11 supported. But first, I will switch to Debian, ref #4.

[ypid]

Android 12 should be supported. I am building GrapheneOS with it, ref hashbang/os#47. I have not build vanilla AOSP with it. That issue can be closed when anyone firms that this works also.