rp2/boards/WAVESHARE_RP2040_PLUS: Add Waveshare RP2040 Plus 4M and 16M.

Includes 4MB and 16MB variants.

Signed-off-by: EngWill <646689853@qq.com>
Signed-off-by: Damien George <damien@micropython.org>

Author: EngineerWill

ports/rp2/boards/WAVESHARE_RP2040_PLUS/board.json

@@ -0,0 +1,23 @@
+{
+    "deploy": [
+        "../deploy.md"
+    ],
+    "docs": "",
+    "features": [
+        "Dual-core",
+        "Battery Charging",
+        "External Flash",
+        "USB-C"
+    ],
+    "images": [
+        "rp2040-plus-1.jpg"
+    ],
+    "mcu": "rp2040",
+    "product": "RP2040-Plus",
+    "thumbnail": "",
+    "url": "https://www.waveshare.com/rp2040-plus.htm",
+    "variants": {
+        "FLASH_16M": "16 MiB Flash"
+    },
+    "vendor": "Waveshare"
+}

ports/rp2/boards/WAVESHARE_RP2040_PLUS/mpconfigboard.cmake

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+# cmake file for Waveshare RP2040-Plus

ports/rp2/boards/WAVESHARE_RP2040_PLUS/mpconfigboard.h

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+// url   :   https://www.waveshare.com/product/rp2040-plus.htm
+// wiki  :   https://www.waveshare.com/wiki/RP2040-Plus
+
+#define MICROPY_HW_FLASH_STORAGE_BYTES (PICO_FLASH_SIZE_BYTES - (1 * 1024 * 1024))
+
+#define MICROPY_HW_USB_VID (0x2E8A)
+#define MICROPY_HW_USB_PID (0x1020)

ports/rp2/boards/WAVESHARE_RP2040_PLUS/mpconfigvariant.cmake

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+set(PICO_BOARD "waveshare_rp2040_plus_4mb")
+
+list(APPEND MICROPY_DEF_BOARD
+    MICROPY_HW_BOARD_NAME="Waveshare RP2040-Plus 4MB"
+)

ports/rp2/boards/WAVESHARE_RP2040_PLUS/mpconfigvariant_FLASH_16M.cmake

@@ -0,0 +1,5 @@
+set(PICO_BOARD "waveshare_rp2040_plus_16mb")
+
+list(APPEND MICROPY_DEF_BOARD
+    MICROPY_HW_BOARD_NAME="Waveshare RP2040-Plus 16MB"
+)