ramips-mt7621: add support for Netgear R6260 (#2556)

docs/user/supported_devices.rst

@@ -304,6 +304,7 @@ ramips-mt7621
 
   - EX6150 (v1)
   - R6220
+  - R6260
   - WAC104
 
 * TP-Link

targets/ramips-mt7621

@@ -27,6 +27,10 @@ device('netgear-r6220', 'netgear_r6220', {
 	factory_ext = '.img',
 })
 
+device('netgear-r6260', 'netgear_r6260', {
+	factory_ext = '.img',
+})
+
 device('netgear-wac104', 'netgear_wac104', {
 	factory_ext = '.img',
 })