ST_ERICSSON: Adding suport for native pixel formats

- Add support for ST-Ericsson native pixel formats and conversion to
    and from these formats.

adapted from http://review.cyanogenmod.org/#/c/29600/

Change-Id: I8eb6dec59fc0c862590641e7fed7742a3491a155
Merge remote-tracking branch 'origin/jellybean' into jb-linaro