drm/amd/amdgpu: Add smc_sk firmware in baffin & ellesmere.

add CGS_UCODE_ID_SMU_SK.

Signed-off-by: yanyang1 <Young.Yang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/include/cgs_common.h b/drivers/gpu/drm/amd/include/cgs_common.h
index ca1e229..7a3714b 100644
--- a/drivers/gpu/drm/amd/include/cgs_common.h
+++ b/drivers/gpu/drm/amd/include/cgs_common.h
@@ -94,6 +94,7 @@
  */
 enum cgs_ucode_id {
 	CGS_UCODE_ID_SMU = 0,
+	CGS_UCODE_ID_SMU_SK,
 	CGS_UCODE_ID_SDMA0,
 	CGS_UCODE_ID_SDMA1,
 	CGS_UCODE_ID_CP_CE,