Fix typo in rgba.c

A bitwise OR is needed in rgba_clear.
Fix VideoSurface size
Return valid codec levels in decoder_query_capabilities
Add VideoSurface get_bits_y_cb_cr for YV12 and NV12
Simplify tiled yuv functions
Merge remote-tracking branch 'upstream/master' into WIP/deint_zille

Conflicts:
	Makefile