fff-boardname: Fix changed board name of WDR4900v1

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Reviewed-by: Tim Niemeyer <tim@tn-x.org>
Reviewed-by: Fabian Bläse <fabian@blaese.de>

src/packages/fff/fff-boardname/files/etc/uci-defaults/50-fff-boardname

@@ -61,6 +61,9 @@ case "$BOARD" in
         grep "4300" /var/sysinfo/model && BOARD=tl-wdr4300-v1
         grep "4310" /var/sysinfo/model && BOARD=tl-wdr4310-v1
         ;;
+    tplink,tl-wdr4900-v1)
+        BOARD=tl-wdr4900-v1
+        ;;
     tl-mr3020)
         BOARD=tl-mr3020-v1
         ;;