ath79: add support for TP-Link WR841N/ND v11

Specification:
- SoC: Atheros AR9533
- Flash: 4 MB
- RAM: 32 MB
- Ethernet: 4x LAN (100M) / 1x WAN (100M)
- WiFi: 2.4G 300M

Flash instruction:
  Flash factory image from stock WebUI.

Signed-off-by: Johann Neuhauser <johann@it-neuhauser.de>

target/linux/ath79/dts/qca9533_tplink_tl-wr841-v11.dts

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "qca9533_tplink_tl-wr841.dtsi"
+
+/ {
+	compatible = "tplink,tl-wr841-v11", "qca,qca9533";
+	model = "TP-Link TL-WR841N/ND Version 11";
+
+	aliases {
+		led-status = &system_led;
+	};
+};
+
+&gpio_leds {
+	system_led: system {
+		label = "tp-link:green:system";
+		gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+		default-state = "off";
+	};
+
+	wan_orange {
+		label = "tp-link:orange:wan";
+		gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+		default-state = "off";
+	};
+};

target/linux/ath79/dts/qca9533_tplink_tl-wr841.dtsi

@@ -11,7 +11,7 @@
 		bootargs = "console=ttyS0,115200n8";
 	};
 
-	leds {
+	gpio_leds: leds {
 		compatible = "gpio-leds";
 
 		wifi {

target/linux/ath79/image/tiny-tp-link.mk

@@ -126,6 +126,17 @@ define Device/tplink_tl-wr841-v9
 endef
 TARGET_DEVICES += tplink_tl-wr841-v9
 
+define Device/tplink_tl-wr841-v11
+  $(Device/tplink-4mlzma)
+  ATH_SOC := qca9533
+  DEVICE_TITLE := TP-LINK TL-WR841N/ND v11
+  TPLINK_HWID := 0x08410011
+  IMAGES += factory-us.bin factory-eu.bin
+  IMAGE/factory-us.bin := append-rootfs | mktplinkfw factory -C US
+  IMAGE/factory-eu.bin := append-rootfs | mktplinkfw factory -C EU
+endef
+TARGET_DEVICES += tplink_tl-wr841-v11
+
 define Device/tplink_tl-wr941-v4
   $(Device/tplink-4m)
   ATH_SOC := ar7240