Add kb2040 onkey keyboard that works with the oled keymap (#17786)

keyboards/handwired/onekey/kb2040/config.h

@@ -0,0 +1,29 @@
+// Copyright 2022 Stefan Kerkmann
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "config_common.h"
+
+#define PRODUCT Onekey Raspberry Pi RP2040
+#define MATRIX_COL_PINS \
+    { GP4 }
+#define MATRIX_ROW_PINS \
+    { GP5 }
+#define DEBUG_MATRIX_SCAN_RATE
+
+#define QMK_WAITING_TEST_BUSY_PIN GP8
+#define QMK_WAITING_TEST_YIELD_PIN GP9
+
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED GP25
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_TIMEOUT 500U
+
+#define RGB_DI_PIN A1
+
+// settings for the oled keyboard demo with Adafruit 0.91" OLED display on the Stemma QT port
+#define OLED_DISPLAY_128X32
+#define I2C_DRIVER I2CD1
+#define I2C1_SDA_PIN GP12
+#define I2C1_SCL_PIN GP13
+