Move audio_firmware_file and /data/misc/audio entry to core sepolicy.

file_contexts uses regexes, not a globs, so use (/.*)? rather than /*
to match the directory and anything beneath it.

Since /data/misc/audio is not device-specific, move it to core sepolicy.
remove Camera overlay, not using. Camera2 new name.
remove bootloader option from advance reboot, dont support on Iproj