Revert "ramips: add support for ipTIME AX2004M"

Commit f4a79148f8 ("ramips: add support for ipTIME AX2004M") seems to
leak KERNEL_LOADADDR 0x82000000 to other devices, causing the to no
longer boot. The leak is visible in u-boot:

   Using 'config-1' configuration
   Trying 'kernel-1' kernel subimage
     Description:  MIPS OpenWrt Linux-5.10.92
     Type:         Kernel Image
     Compression:  lzma compressed
     Data Start:   0x840000e4
     Data Size:    10750165 Bytes = 10.3 MiB
     Architecture: MIPS
     OS:           Linux
     Load Address: 0x82000000
     Entry Point:  0x82000000

Normally, it should look like this:

   Using 'config-1' configuration
   Trying 'kernel-1' kernel subimage
     Description:  MIPS OpenWrt Linux-5.10.92
     Type:         Kernel Image
     Compression:  lzma compressed
     Data Start:   0xbfca00e4
     Data Size:    2652547 Bytes = 2.5 MiB
     Architecture: MIPS
     OS:           Linux
     Load Address: 0x80001000
     Entry Point:  0x80001000

Revert the commit to avoid more people soft-bricking their devices.

This reverts commit f4a79148f8.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

target/linux/ramips/dts/mt7621_iptime_ax2004m.dts

@@ -1,165 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
-
-#include "mt7621.dtsi"
-
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
-/ {
-	compatible = "iptime,ax2004m", "mediatek,mt7621-soc";
-	model = "ipTIME AX2004M";
-
-	aliases {
-		led-boot = &led_cpu;
-		led-failsafe = &led_cpu;
-		led-running = &led_cpu;
-		led-upgrade = &led_cpu;
-	};
-
-	chosen {
-		bootargs = "console=ttyS0,115200";
-	};
-
-	leds {
-		compatible = "gpio-leds";
-
-		led_cpu: cpu {
-			label = "amber:cpu";
-			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
-		};
-
-		wlan2g {
-			label = "amber:wlan2g";
-			gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
-			linux,default-trigger = "phy0radio";
-		};
-
-		wlan5g {
-			label = "amber:wlan5g";
-			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
-			linux,default-trigger = "phy1radio";
-		};
-	};
-
-	keys {
-		compatible = "gpio-keys";
-
-		reset {
-			label = "reset";
-			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_RESTART>;
-		};
-	};
-};
-
-&nand {
-	status = "okay";
-
-	partitions {
-		compatible = "fixed-partitions";
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		partition@0 {
-			label = "u-boot";
-			reg = <0x0 0x80000>;
-			read-only;
-		};
-
-		partition@80000 {
-			label = "config";
-			reg = <0x80000 0x80000>;
-			read-only;
-		};
-
-		factory: partition@100000 {
-			label = "factory";
-			reg = <0x100000 0x80000>;
-			read-only;
-
-			compatible = "nvmem-cells";
-			#address-cells = <1>;
-			#size-cells = <1>;
-
-			macaddr_factory_4: macaddr@4 {
-				reg = <0x4 0x6>;
-			};
-		};
-
-		partition@180000 {
-			label = "firmware";
-			reg = <0x180000 0x7680000>;
-
-			compatible = "fixed-partitions";
-			#address-cells = <1>;
-			#size-cells = <1>;
-
-			partition@0 {
-				label = "kernel";
-				reg = <0x0 0x400000>;
-			};
-
-			partition@400000 {
-				label = "ubi";
-				reg = <0x400000 0x7280000>;
-			};
-		};
-	};
-};
-
-&state_default {
-	gpio {
-		groups = "i2c", "jtag", "wdt";
-		function = "gpio";
-	};
-};
-
-&gmac0 {
-	nvmem-cells = <&macaddr_factory_4>;
-	nvmem-cell-names = "mac-address";
-	mac-address-increment = <3>;
-};
-
-&switch0 {
-	ports {
-		port@0 {
-			status = "okay";
-			label = "wan";
-			nvmem-cells = <&macaddr_factory_4>;
-			nvmem-cell-names = "mac-address";
-			mac-address-increment = <1>;
-		};
-
-		port@1 {
-			status = "okay";
-			label = "lan4";
-		};
-
-		port@2 {
-			status = "okay";
-			label = "lan3";
-		};
-
-		port@3 {
-			status = "okay";
-			label = "lan2";
-		};
-
-		port@4 {
-			status = "okay";
-			label = "lan1";
-		};
-	};
-};
-
-&pcie {
-	status = "okay";
-};
-
-&pcie1 {
-	wifi@0,0 {
-		compatible = "mediatek,mt76";
-		reg = <0x0000 0 0 0 0>;
-		mediatek,mtd-eeprom = <&factory 0x0>;
-	};
-};