ath79: add support for Hak5 WiFi Pineapple NANO

Hak5 WiFi Pineapple NANO is an "USB dongle" device dedicated for Wi-Fi
pentesters. This device is based on Atheros AR9331 and AR9271. Support
for it was first introduced in 950b278c81 (ar71xx). FCC ID: 2AB87-NANO.

Specifications:

- Atheros AR9331
- 400/400/200 MHz (CPU/DDR/AHB)
- 64 MB of RAM (DDR1)
- 16 MB of flash (SPI NOR)
- 1T1R 2.4 GHz Wi-Fi (AR9331)
- 1T1R 2.4 GHz Wi-Fi (AR9271L), with ext. PA and LNA (Qorvo RFFM4203)
- 2x RP-SMA antenna connectors
- 1x USB 2.0 to 10/100 Ethernet bridge (ASIX AX88772A)
- integrated 4-port USB 2.0 HUB: Alcor Micro AU6259:
  - 1x USB 2.0
  - 1x microSD card reader (Genesys Logic GL834L)
  - Atheros AR9271L
- 1x LED, 1x button
- UART (4-pin, 2 mm pitch) header on PCB
- USB 2.0 Type-A plug for power and AX88772A

Flash instruction:

You can use sysupgrade image directly in vendor firmware which is based
on OpenWrt/LEDE.

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

target/linux/ath79/dts/ar9331_hak5_wifi-pineapple-nano.dts

@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar9331.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Hak5 WiFi Pineapple NANO";
+	compatible = "hak5,wifi-pineapple-nano", "qca,ar9331";
+
+	aliases {
+		label-mac-device = &wmac;
+		led-boot = &led_system;
+		led-failsafe = &led_system;
+		led-upgrade = &led_system;
+		serial0 = &uart;
+	};
+
+	gpio-export {
+		compatible = "gpio-export";
+		#size-cells = <0>;
+
+		microsd-detect {
+			gpio-export,name = "microsd-detect";
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+		};
+
+		usb-alarm {
+			gpio-export,name = "usb-alarm";
+			gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+		};
+
+		usb-power {
+			gpio-export,name = "usb-power";
+			gpio-export,output = <0>;
+			gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_system: system {
+			label = "wifi-pineapple-nano:blue:system";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	mtd-mac-address = <&art 0x6>;
+};
+
+&eth1 {
+	status = "okay";
+
+	compatible = "syscon", "simple-mfd";
+};
+
+&spi {
+	status = "okay";
+
+	num-cs = <1>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		m25p,fast-read;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x020000>;
+				read-only;
+			};
+
+			partition@20000 {
+				label = "firmware";
+				reg = <0x020000 0xfd0000>;
+				compatible = "tplink,firmware";
+			};
+
+			art: partition@ff0000 {
+				label = "art";
+				reg = <0xff0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&uart {
+	status = "okay";
+};
+
+&usb {
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+};

target/linux/ath79/generic/base-files/etc/board.d/02_network

@@ -30,6 +30,7 @@ ath79_setup_interfaces()
 	engenius,ecb1750|\
 	enterasys,ws-ap3705i|\
 	glinet,gl-ar300m-lite|\
+	hak5,wifi-pineapple-nano|\
 	meraki,mr16|\
 	netgear,ex6400|\
 	netgear,ex7300|\

target/linux/ath79/image/generic.mk

@@ -1045,6 +1045,19 @@ define Device/hak5_packet-squirrel
 endef
 TARGET_DEVICES += hak5_packet-squirrel
 
+define Device/hak5_wifi-pineapple-nano
+  $(Device/tplink-16mlzma)
+  SOC := ar9331
+  DEVICE_VENDOR := Hak5
+  DEVICE_MODEL := WiFi Pineapple NANO
+  TPLINK_HWID := 0x4e414e4f
+  IMAGES := sysupgrade.bin
+  DEVICE_PACKAGES := kmod-ath9k-htc kmod-usb-chipidea2 kmod-usb-storage \
+	-swconfig -uboot-envtools
+  SUPPORTED_DEVICES += wifi-pineapple-nano
+endef
+TARGET_DEVICES += hak5_wifi-pineapple-nano
+
 define Device/iodata_etg3-r
   SOC := ar9342
   DEVICE_VENDOR := I-O DATA