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

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/include/mach/sama5d3.h

@@ -64,6 +64,14 @@
 #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
  */