ar71xx: /lib/ar71xx.sh: add model detection for TP-Link TL-WR810N

Properly report the revision in /tmp/sysinfo/model.

Signed-off-by: Matthias Schiffer <[email protected]>

target/linux/ar71xx/base-files/lib/ar71xx.sh

@@ -215,6 +215,9 @@ tplink_board_detect() {
 
 		[ "$hwid" = '08020002' -a "$mid" = '00000002' ] && hwver=' v2'
 		;;
+	"081000"*)
+		model="TP-Link TL-WR810N"
+		;;
 	"083000"*)
 		model="TP-Link TL-WA830RE"