vl/video_buffer: add support for P016
vl/video_buffer: add support for P016

Just simply the description of the planes.

Signed-off-by: Christian König <c7ea837d7a46effe4232b086213468b8b31643bf@amd.com>
Reviewed-by: Mark Thompson <8d4c780fcfdc41841e5070f4c43da8958ba6aec0@jkqxz.net>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler