Fix CSS UART clock value

Fixes ARM-software/tf-issues#479

Change-Id: Iadbde2595ad6a0ac3988d17e614c698986959277
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>

include/plat/arm/soc/common/soc_css_def.h

@@ -24,8 +24,8 @@
 #define SOC_CSS_UART0_BASE		0x7ff80000
 #define SOC_CSS_UART1_BASE		0x7ff70000
 
-#define SOC_CSS_UART0_CLK_IN_HZ		7273800
-#define SOC_CSS_UART1_CLK_IN_HZ		7273800
+#define SOC_CSS_UART0_CLK_IN_HZ		7372800
+#define SOC_CSS_UART1_CLK_IN_HZ		7372800
 
 /* SoC NIC-400 Global Programmers View (GPV) */
 #define SOC_CSS_NIC400_BASE		0x7fd00000