drm/amdgpu: add asic funcs for renoir

add asic funcs for renoir, init soc15_asic_funcs
Acked-by: NHuang Rui <ray.huang@amd.com>
Signed-off-by: NAaron Liu <aaron.liu@amd.com>
Reviewed-by: NHuang Rui <ray.huang@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -1144,6 +1144,7 @@ static int soc15_common_early_init(void *handle)
 		adev->external_rev_id = adev->rev_id + 0x32;
 		break;
 	case CHIP_RENOIR:
+		adev->asic_funcs = &soc15_asic_funcs;
 		adev->cg_flags = 0;
 		adev->pg_flags = 0;
 		adev->external_rev_id = adev->rev_id + 0x91;