drm/amdgpu: Load vcn_v4_0_3 ucode during early_init

VCN loading ucode is moved to early_init with using 'amdgpu_ucode_*'
helpers.
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Sonny Jiang <sonjiang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c

@@ -69,7 +69,7 @@ static int vcn_v4_0_3_early_init(void *handle)
 	vcn_v4_0_3_set_unified_ring_funcs(adev);
 	vcn_v4_0_3_set_irq_funcs(adev);
 
-	return 0;
+	return amdgpu_vcn_early_init(adev);
 }
 
 /**