Fixes for NDK 20

[molind]

It fixes two issues.

First one related to OpenCore coding style. They defined lots of constant tables as Int32, while values was used is bigger than Int32 max. Since it's just Int32 and UInt32 I've silenced this warning using -Wno-narrowing. Better solution would be to fix code in OpenCore.

Example:

/Users/evgen/git/aac/opencore/codecs_v2/audio/aac/dec/src/analysis_sub_band.cpp:108:18: error: constant expression evaluates to 4268654590 which cannot be narrowed to type 'Int32'
      (aka 'int') [-Wc++11-narrowing]
    0x07D97FC2,  0xFE6E7FFE, 0xF5057F87, 0xEBAB7E60,
                 ^~~~~~~~~~

Also there is no src/get_cce.cpp source file anymore and I just removed it from sources list.

Second issue is linker warning for armeabi-v7a:

[armeabi-v7a] SharedLibrary  : libaacdecoder.so
/Volumes/raid/android/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: warning: shared library text segment is not shareable
/Volumes/raid/android/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: error: treating warnings as errors

It was fixed by LOCAL_DISABLE_FATAL_LINKER_WARNINGS := true