drm/amdgpu: add uvd enc ring type and functions

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h

@@ -46,7 +46,8 @@ enum amdgpu_ring_type {
 	AMDGPU_RING_TYPE_SDMA,
 	AMDGPU_RING_TYPE_UVD,
 	AMDGPU_RING_TYPE_VCE,
-	AMDGPU_RING_TYPE_KIQ
+	AMDGPU_RING_TYPE_KIQ,
+	AMDGPU_RING_TYPE_UVD_ENC
 };
 
 struct amdgpu_device;