Add format P010 etc for 10bit/12bit/16bit YUV420 formats

Add those definition in dri2_interface.h and in intel_screen.c This will make P010 formats be sampleable in OpenGL

v2: cleanups, remove Android changes for now (Tapani)

Signed-off-by: Lin Johnson johnson.lin@intel.com Signed-off-by: Tapani Pälli tapani.palli@intel.com