Patch AMLCodec to work with 4K video format
[AMLCodec] Allow 4K only on Meson8 or higher
FIX: [amlcodec] make FF/RW work
[AMLUtils] Change some more permissions

In current Android 4.4.2 sources we need to change
permissions to 666 for following:

    /dev/amvideo
    /dev/amstream_sub
    /dev/amstream_sub_read
    /dev/amstream_rm
    /dev/amstream_mpps
    /dev/amstream_mpts
    /dev/amstream_abuf
    /dev/amstream_vbuf
[AMLUtils] Unused variable: audio_formats.
[amlutil] drop use of StdString::Split and fix use of incorrect loop parameter
[AML] Be rid of damned cpu type magic numbers
[AML] Ensure cputype range checks are valid.
[AML] Don't assume M1 for unknown CPUs
[AML] Apply MX cpu scale hack only to MX
[AML] Use M1 digital_raw val only on M1
[AML] Cosmetics

1) Sort device checks
2) Rename *cputype symbols to *device_type for consistency
Add Android 4.4 patch