board: sama5d27_som1_ek: Fix the USB vbus power

According to the REVB schematic, fix the USB vbus power enable pin.

Based on original work by Wenyou Yang

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>

board/atmel/sama5d27_som1_ek/sama5d27_som1_ek.c

@@ -19,7 +19,7 @@ DECLARE_GLOBAL_DATA_PTR;
 
 static void board_usb_hw_init(void)
 {
-	atmel_pio4_set_pio_output(AT91_PIO_PORTB, 10, 1);
+	atmel_pio4_set_pio_output(AT91_PIO_PORTA, 27, 1);
 }
 
 #ifdef CONFIG_BOARD_LATE_INIT