exynos4: libstragefright: add support for samsung colorformat/omx/mfc

Source:
http://git.insignal.co.kr/samsung/exynos/android/platform/frameworks/av/commit/?h=exynos-jb&id=1614612f7ca2a00473d202dbedcb135fadc608ad

Conflicts:

	media/libstagefright/ACodec.cpp
	media/libstagefright/OMXCodec.cpp

cherry pick from 906eba9f

Change-Id: I1c174f8e9fa9bd3ed16a0399f070b6680f6a331c
AudioPolicy: Reject offloading for non-music streams

- Reject output request if called with non-music stream
  type but with AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD

- This will allow the client to fall back to SW decode or
  deal with the error appropriately.

Change-Id: Ib7a805a884b02b3e5169da334292dfb776fe41bf
raw : Increase the input/output buffer size of raw omx component.

 -Few specific flac clips are not playing using QTI-FLAC decoder.
 -Nuplayer uses the OMX component of default RAW decoder for FLAC codec,
  So increase the input/output buffer size of raw omx component to
  support specific flac clips.

Change-Id: Ieb528b0b210a8649d86b4ccde940256472b95443
libstagefright: back off exynos4 hacks

Change-Id: I953f502171bc98854b5d59165057c57b3c65cdaa
libstagefright: align YV12 for software codecs on exynos4

YV12 chroma stide should be aligned to 16 according to the
android framework. But, GSC & Mali couldn't accept a seperate
stride for U & V components. They just use Y_stride/2 as a
UV Stride.

Change-Id: Ibeeb3439ee10a4666420e5fa34ff0a6d6ea7c003
libstagefright: fix YV12 stride for software codecs on exynos4

Change-Id: I3612899d2bffa474eb6447788858911757a7f45d
omx: exynos4: bring inline with jellybean

Change-Id: Ic275fd30a721f8161dcc44c2706b86ab5ea213ba