ar71xx: add support for ALFA Network AP91-5G

ALFA Network AP91-5G is a 5 GHz outdoor AP/CPE board, based on Atheros
AR7240 + AR9280.

Specification:

- 400/400/200 MHz (CPU/DDR/AHB)
- 32 MB of RAM (DDR1)
- 8 MB of FLASH (SPI NOR)
- 1x 10/100 Mbps Ethernet, with passive PoE support (24 V)
- 1T1R 5 GHz (AR9280), with ext. PA (SE5004L) and LNA, up to 27 dBm
- 6x LED (5 are driven by GPIO)
- 1x button (reset)
- external h/w watchdog (EM6324QYSP5B, disabled and not used)
- header for optional 802.3at/af PoE module
- DC jack for main power input (optional, not installed by default)
- UART and LEDs headers on PCB

Flash instruction:

Use "factory" image in vendor GUI (in case of problems, make sure your
board has up to date firmware). Alternatively, TFTP in U-Boot can be
used: select option "2. Load system code then write to Flash via TFTP"
during early boot and use "sysupgrade" image.

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index b5440230a5..e90d89e20e 100755
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -446,6 +446,9 @@ ar71xx_board_detect() {
 	*"AP90Q")
 		name="ap90q"
 		;;
+	*"AP91-5G")
+		name="ap91-5g"
+		;;
 	*"Archer C25 v1")
 		name="archer-c25-v1"
 		;;
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index ecf6820a2b..37c637b6f5 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -310,6 +310,7 @@ platform_check_image() {
 	ap136-020|\
 	ap147-010|\
 	ap152|\
+	ap91-5g|\
 	ap96|\
 	arduino-yun|\
 	bhr-4grv2|\