tusb_config: refactor code

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

tusb_config.h

@@ -1,36 +1,19 @@
+// SPDX-License-Identifier: MIT
 /*
- * The MIT License (MIT)
+ * Copyright (c) 2021 Álvaro Fernández Rojas <noltari@gmail.com>
- *
  * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
  * Copyright (c) 2020 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
  */
 
-#ifndef _PICO_STDIO_USB_TUSB_CONFIG_H
+#if !defined(_TUSB_CONFIG_H_)
-#define _PICO_STDIO_USB_TUSB_CONFIG_H
+#define _TUSB_CONFIG_H_
 
-#define CFG_TUSB_RHPORT0_MODE   (OPT_MODE_DEVICE)
+#include <tusb_option.h>
 
-#define CFG_TUD_CDC             (2)
+#define CFG_TUSB_RHPORT0_MODE OPT_MODE_DEVICE
-#define CFG_TUD_CDC_RX_BUFSIZE  (256)
-#define CFG_TUD_CDC_TX_BUFSIZE  (256)
 
-#endif
+#define CFG_TUD_CDC 2
+#define CFG_TUD_CDC_RX_BUFSIZE 256
+#define CFG_TUD_CDC_TX_BUFSIZE 256
+
+#endif /* _TUSB_CONFIG_H_ */