ath79-generic: add support for NETGEAR WNDRMAC v2 (#3232)

This device was supported before the target-migration to ath79.

(cherry picked from commit dd56c00c)

Co-authored-by: Felix <8057646+GoliathLabs@users.noreply.github.com>

docs/user/supported_devices.rst

@@ -76,6 +76,7 @@ ath79-generic
   - WNDR3700 (v1, v2)
   - WNDR3800
   - WNR2200 (8M, 16M)
+  - WNDRMAC (v2)
 
 * OCEDO
 

targets/ath79-generic

@@ -223,6 +223,9 @@ device('netgear-wnr2200-16m', 'netgear_wnr2200-16m', {
 	factory_ext = '.img',
 })
 
+device('netgear-wndrmac-v2', 'netgear_wndrmac-v2', {
+	factory_ext = '.img',
+})
 
 -- OCEDO