drm/amdgpu/discovery: add SMUIO_13_0_8 func support

Add SMUIO funcs for SMUIO_13_0_8.
Signed-off-by: NChengming Gui <Jack.Gui@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_discovery.c

@@ -2270,6 +2270,7 @@ int amdgpu_discovery_set_ip_blocks(struct amdgpu_device *adev)
 		adev->smuio.funcs = &smuio_v13_0_funcs;
 		break;
 	case IP_VERSION(13, 0, 6):
+	case IP_VERSION(13, 0, 8):
 		adev->smuio.funcs = &smuio_v13_0_6_funcs;
 		break;
 	default: