feat(boards): 添加 atguigu mini_keyboard 开发板支持

- 添加 nrf52840_qiaa SoC 配置支持
- 配置 JLink 和 pyOCD 调试器参数
- 定义开发板引脚控制和设备树配置
- 设置 Flash 分区和内存布局
- 配置 LED 灯和 GPIO 控制器
- 添加预编译设备树配置选项

boards/atguigu/mini_keyboard/mini_keyboard.dts

@@ -0,0 +1,61 @@
+/dts-v1/;
+#include <nordic/nrf52840_qiaa.dtsi>
+#include "mini_keyboard-pinctrl.dtsi"
+
+/ {
+	model = "Mini keyboard";
+	compatible = "atguigu,mini-keyboard";
+
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,code-partition = &slot0_partition;
+	};
+
+	aliases {
+        led0 = &myled0;
+    };
+
+    leds {
+        compatible = "gpio-leds";
+        myled0: led_0 {
+            gpios = <&gpio1 2 GPIO_ACTIVE_LOW>;
+        };
+    };
+};
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 DT_SIZE_K(48)>;
+		};
+
+		slot0_partition: partition@c000 {
+			label = "image-0";
+			reg = <0x0000c000 DT_SIZE_K(472)>;
+		};
+
+		slot1_partition: partition@82000 {
+			label = "image-1";
+			reg = <0x00082000 DT_SIZE_K(472)>;
+		};
+
+		storage_partition: partition@f8000 {
+			label = "storage";
+			reg = <0x000f8000 DT_SIZE_K(32)>;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpiote {
+	status = "okay";
+};