Fixup ChibiOS header inclusion search ordering. (#19623)

* Add STM32F446-Nucleo onekey. 

* Fixup onekey build for F446, all keymaps.

* Fixup board inclusion search ordering.

keyboards/handwired/onekey/nucleo_f446re/config.h

@@ -0,0 +1,16 @@
+// Copyright 2021 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#include "config_common.h"
+
+#define BACKLIGHT_PWM_DRIVER  PWMD4
+#define BACKLIGHT_PWM_CHANNEL 3
+#define BACKLIGHT_PAL_MODE    2
+
+#define RGB_CI_PIN B13
+
+#define ADC_PIN A0
+
+#define SOLENOID_PINS { B12, B13, B14, B15 }
+#define SOLENOID_PINS_ACTIVE_STATE { high, high, low }