Added dchububu.h header file for common enum/struct definitions.
Added new interface functions get_dcc_compression_cap,
dcc_support_swizzle, dcc_support_pixel_format.
Signed-off-by: NEric Bernstein <eric.bernstein@amd.com>
Reviewed-by: NDmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: NHarry Wentland <harry.wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>