ARM: at91: sama5d3: add definition for usart base address

#define SAMA5D3_ID_TRNG		45	/* True Random Generator Number */

#define SAMA5D3_ID_IRQ0		47	/* Advanced Interrupt Controller (IRQ0) */

/*

 * User Peripheral physical base addresses.

 */

#define SAMA5D3_BASE_USART0	0xf001c000

#define SAMA5D3_BASE_USART1	0xf0020000

#define SAMA5D3_BASE_USART2	0xf8020000

#define SAMA5D3_BASE_USART3	0xf8024000

/*

 * Internal Memory

 */