Clean up usage of QMK_KEYBOARD_H (#20167)

keyboards/converter/xmk/xmk.c

@@ -3,7 +3,7 @@
 
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include QMK_KEYBOARD_H
+#include "quantum.h"
 
 #if defined (XMK_DEBUG)
 void keyboard_post_init_kb(void) {

keyboards/converter/xmk/xmk_matrix.c

@@ -4,6 +4,8 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "xmk_matrix.h"
+#include "matrix.h"
+#include "debug.h"
 
 bool xmk_changed = false;
 matrix_row_t xmk_rows[MATRIX_ROWS];

keyboards/converter/xmk/xmk_matrix.h

@@ -5,6 +5,7 @@
 
 #pragma once
 
-#include QMK_KEYBOARD_H
+#include <stdbool.h>
+#include <stdint.h>
 
 void xmk_matrix_key(bool press, uint8_t key);