drm/amdgpu: enable tmz on renoir asics

The tmz functions are verified on renoir chips as well. So enable it by
default.

Signed-off-by: Huang Rui <[e-mail]>
Tested-by: Lang Yu <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 {
 	switch (adev->asic_type) {
 	case CHIP_RAVEN:
+	case CHIP_RENOIR:
 		if (amdgpu_tmz == 0) {
 			adev->gmc.tmz_enabled = false;
 			dev_info(adev->dev,
···
 				 "Trusted Memory Zone (TMZ) feature enabled\n");
 		}
 		break;
-	case CHIP_RENOIR:
 	case CHIP_NAVI10:
 	case CHIP_NAVI14:
 	case CHIP_NAVI12: