ath79-generic: add naive support for DIR-825

targets/ath79-generic

@@ -152,6 +152,13 @@ device('d-link-dir825b1', 'dlink_dir-825-b1', {
 	factory = false,
 })
 
+device('d-link-dir-825-rev-c1', 'dlink_dir-825-c1', {
+	factory = false,
+	manifest_aliases = {
+		'd-link-dir-825-rev-c1', -- Upgrade from OpenWrt 19.07
+	},
+})
+
 
 -- Enterasys