arm64: versal: Adjust cpu clock for versal virtual

This patch modifies cpu clock for Xilinx Versal virtual
platform in order to keep same as used by QEMU.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: I169d082462d7ce94a82c62966ab9eb122c5a3fee

plat/xilinx/versal/include/versal_def.h

@@ -87,7 +87,7 @@
 # define PLATFORM_NAME		"Versal Virt"
 # define VERSAL_UART_CLOCK	25000000
 # define VERSAL_UART_BAUDRATE	115200
-# define VERSAL_CPU_CLOCK	62500000
+# define VERSAL_CPU_CLOCK	2720000
 #endif
 
 /* Access control register defines */