juno: Fix base addresses for UART2 and UART3

Also remove 'PL011_BASE' macro because it is no longer used.

Change-Id: Iefe94037cf67293b630d5256e6cac3f82abda807

plat/juno/platform.h

@@ -245,11 +245,14 @@
 /*******************************************************************************
  * PL011 related constants
  ******************************************************************************/
+/* FPGA UART0 */
 #define PL011_UART0_BASE		0x1c090000
+/* FPGA UART1 */
 #define PL011_UART1_BASE		0x1c0a0000
-#define PL011_UART2_BASE		0x1c0b0000
-#define PL011_UART3_BASE		0x1c0c0000
-#define PL011_BASE			PL011_UART0_BASE
+/* SoC UART0 */
+#define PL011_UART2_BASE		0x7ff80000
+/* SoC UART1 */
+#define PL011_UART3_BASE		0x7ff70000
 
 /*******************************************************************************
  * NIC-400 related constants