fix(versal-net): add default values for silicon

Add missing default value for silicon.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Change-Id: Iac7d4db17a29a148298e9e3bd3eb3f74cafe7bc1
diff --git a/plat/xilinx/versal_net/bl31_versal_net_setup.c b/plat/xilinx/versal_net/bl31_versal_net_setup.c
index 97080e9..c9942d6 100644
--- a/plat/xilinx/versal_net/bl31_versal_net_setup.c
+++ b/plat/xilinx/versal_net/bl31_versal_net_setup.c
@@ -88,6 +88,9 @@
 		uart_clock = 25000000;
 		break;
 	case VERSAL_NET_SILICON:
+		cpu_clock = 100000000;
+		uart_clock = 100000000;
+		break;
 	default:
 		panic();
 	}