rp2/boards: Add Adafruit Trinkey QT2040.

ports/rp2/boards/ADAFRUIT_TRINKEY_QT2040/mpconfigboard.cmake

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+# cmake file for Adafruit Trinkey QT2040

ports/rp2/boards/ADAFRUIT_TRINKEY_QT2040/mpconfigboard.h

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+// https://www.adafruit.com/product/5056
+// https://learn.adafruit.com/adafruit-trinkey-qt2040/pinouts
+
+#define MICROPY_HW_BOARD_NAME          "Adafruit Trinkey QT2040"
+#define MICROPY_HW_FLASH_STORAGE_BYTES (7 * 1024 * 1024)
+
+#define MICROPY_HW_USB_VID (0x239A)
+#define MICROPY_HW_USB_PID (0x8106)
+
+// STEMMA QT / Qwiic on I2C0
+#define MICROPY_HW_I2C0_SCL  (17)
+#define MICROPY_HW_I2C0_SDA  (16)
+
+// NeoPixel data GPIO27, power not toggleable
+
+// Boot button GPIO12, can be used as user btn