drm/amdgpu: Add a ring type KIQ definition

Add a new ring type definition for KIQ. KIQ is used for interaction
between driver and CP.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Trigger Huang <trigger.huang@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

@@ -44,7 +44,8 @@ enum amdgpu_ring_type {
 	AMDGPU_RING_TYPE_COMPUTE,
 	AMDGPU_RING_TYPE_SDMA,
 	AMDGPU_RING_TYPE_UVD,
-	AMDGPU_RING_TYPE_VCE
+	AMDGPU_RING_TYPE_VCE,
+	AMDGPU_RING_TYPE_KIQ
 };
 
 struct amdgpu_device;