MediaCodec - use software decoder/encoder h264

-Either our OMX patch is incompleted or our h.264 encoder/decoders
do not properly implement functions of the MediaCodec class
introduced in API 16 (JellyBean). So the solution here
is to use software encoder/decoder for video/avc.

NOTE: this also requires a patch in libstagefright to skip codec
configuration when a software encoder/decoder is detected and
to add software encoders to the media_codecs.xml

Change-Id: I787057fa39e6b674e832a3f762436e1a5403f6d2
fix: Qcom camera features max values not set.

-was returning null for getMaxSaturation. Now returns 0.

Change-Id: Ifdea6cc3af97f3fd065c04cd7d44a2e699ba1dbd