support ra2a1 pipe numbering, fix ra2a1 ek led/button. Though usb not enumerated yet, probably due to bsp/clock setup

hw/bsp/ra/vector_data.h

@@ -9,8 +9,11 @@ extern "C" {
 /* ISR prototypes */
 void usbfs_interrupt_handler(void);
 void usbfs_resume_handler(void);
+
+#ifndef BSP_MCU_GROUP_RA2A1
 void usbfs_d0fifo_handler(void);
 void usbfs_d1fifo_handler(void);
+#endif
 
 #ifdef BOARD_HAS_USB_HIGHSPEED
 void usbhs_interrupt_handler(void);