drm/radeon/kms: add SI chip families

Signed-off-by: Alex Deucher <alexdeucher@gmail.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 49f7cb7..9b8dace 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -89,6 +89,9 @@
 	"TURKS",
 	"CAICOS",
 	"CAYMAN",
+	"TAHITI",
+	"PITCAIRN",
+	"VERDE",
 	"LAST",
 };