drm/amdgpu: add fw load type flag for rlc autoload

Add another firmware load type AMDGPU_FW_LOAD_RLC_AUTO to support firmware
autoloading new feature in gfx10.

This flag can be leveraged for future engines that need autoload fw.
Signed-off-by: NLe.Ma <Le.Ma@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -238,6 +238,7 @@ enum amdgpu_firmware_load_type {
 	AMDGPU_FW_LOAD_DIRECT = 0,
 	AMDGPU_FW_LOAD_SMU,
 	AMDGPU_FW_LOAD_PSP,
+	AMDGPU_FW_LOAD_RLC_AUTO,
 };
 
 /* conform to smu_ucode_xfer_cz.h */