drm/radeon/kms: add trinity (TN) chip family

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index beeefb8..ea7df16e2 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -89,6 +89,7 @@
 	"TURKS",
 	"CAICOS",
 	"CAYMAN",
+	"ARUBA",
 	"TAHITI",
 	"PITCAIRN",
 	"VERDE",