ath79-generic: (re)add WNR2200-8M

Gone due to
commit 45c84a11 ("ar71xx: drop target")

ar71xx only supported the 8M variant

docs/user/supported_devices.rst

@@ -51,6 +51,7 @@ ath79-generic
 * Netgear
 
   - WNDR3700 (v1, v2)
+  - WNR2200 (8M)
 
 * OCEDO
 

targets/ath79-generic

@@ -149,6 +149,13 @@ device('netgear-wndr3700-v2', 'netgear_wndr3700-v2', {
 	factory_ext = '.img',
 })
 
+device('netgear-wnr2200-8m', 'netgear_wnr2200-8m', {
+	manifest_aliases = {
+		'netgear-wnr2200', -- Upgrade from OpenWrt 19.07
+	},
+	factory_ext = '.img',
+})
+
 
 -- OCEDO