openmax: add support for OMX

add suport for OMX_STE_COLOR_FormatYUV420PackedSemiPlanarMB

Change-Id: If6e57fc6acdc8b0147ca6a4420e49134785f4254
Remove unused NVidia egl extensions

Change-Id: I5cb718426c4c3d261f7ef723e8d5be9b2e61b6e3
Signed-off-by: Patrik Ryd <patrik.ryd@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/70892
Signed-off-by: Alin Jerpelea <jerpelea@gmail.com>