ramips: add support for Asus RT-N11P / RT-N12+ / RT-N12E b1

This is a variant of the MT7620N-based Asus routers.

Specifications:

- MT7620N (580 MHz)
- 32 MB RAM
- 8 MB Flash
- 5x 10/100Mbps Ethernet (built-in switch)
- 2.4 GHz WLAN
- 2x external, non-detachable antennas
- UART (J2) header on PCB (115200 8n1)

Flash instructions:

1. Configure PC with static IP 192.168.1.75/24
2. Connect PC with one of LAN ports, press the reset button, power up
   the router and keep button pressed for around 6-7 seconds. All 4 LEDs will
   start to blink, which is when the router will accept firmware files via TFTP.
   No known limitations on firmware filenames, just send it with a TFTP client
   to 192.168.1.1.
3. Router will download file from server, write it to flash and reboot.

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>

2 files changed, 4 insertions, 0 deletions

diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index 76ca3d1306..bf19a4c570 100755
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -460,6 +460,9 @@ ramips_board_detect() {
 	*"RT-N10+")
 		name="rt-n10-plus"
 		;;
+	*"RT-N12+")
+		name="rt-n12p"
+		;;
 	*"RT-N13U")
 		name="rt-n13u"
 		;;
diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index 0d5b6bb4fc..3181da2ca2 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -130,6 +130,7 @@ platform_check_image() {
 	rt-ac51u|\
 	rt-g32-b1|\
 	rt-n10-plus|\
+	rt-n12p|\
 	rt-n13u|\
 	rt-n14u|\
 	rt-n15|\