added a setting for RX63X
#elif CFG_TUSB_MCU == OPT_MCU_EFM32GG || CFG_TUSB_MCU == OPT_MCU_EFM32GG11 || CFG_TUSB_MCU == OPT_MCU_EFM32GG12
#include "em_device.h"
+#elif CFG_TUSB_MCU == OPT_MCU_RX63X
+ // no header needed
+
#else
#error "Missing MCU header"
#endif
