drm/amdgpu/discovery: Set GC family for GC 12.0 IP

Set GC family for GC 12.0 IPs.

v2: squash in updates (Alex)
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2518,6 +2518,10 @@ int amdgpu_discovery_set_ip_blocks(struct amdgpu_device *adev)
 	case IP_VERSION(11, 5, 1):
 		adev->family = AMDGPU_FAMILY_GC_11_5_0;
 		break;
+	case IP_VERSION(12, 0, 0):
+	case IP_VERSION(12, 0, 1):
+		adev->family = AMDGPU_FAMILY_GC_12_0_0;
+		break;
 	default:
 		return -EINVAL;
 	}