Work-In-Progress Porting Of GCN 1.0/1.1 UVD To AMDGPU DRM Driver

With the experimental AMDGPU DRM driver's support for GCN 1.0 "Southern Islands" and GCN 1.1 "Sea Islands" graphics processors as an alternative to the default Radeon DRM driver, one of the disadvantages of that experimental kernel driver is losing out on UVD video decoding. But a port is in the works...