ARM64: zynqmp: Add initial support for the first silicon

Add basic configuration for the first silicon.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

arch/arm/cpu/armv8/zynqmp/clk.c

@@ -21,9 +21,11 @@ unsigned long get_uart_clk(int dev_id)
 		return 48000;
 	case ZYNQMP_CSU_VERSION_EP108:
 		return 25000000;
+	case ZYNQMP_CSU_VERSION_QEMU:
+		return 133000000;
 	}
 
-	return 133000000;
+	return 100000000;
 }
 
 unsigned long zynqmp_get_system_timer_freq(void)

arch/arm/cpu/armv8/zynqmp/cpu.c

@@ -38,9 +38,11 @@ unsigned int zynqmp_get_silicon_version(void)
 		return ZYNQMP_CSU_VERSION_VELOCE;
 	case 50000000:
 		return ZYNQMP_CSU_VERSION_QEMU;
+	case 4000000:
+		return ZYNQMP_CSU_VERSION_EP108;
 	}
 
-	return ZYNQMP_CSU_VERSION_EP108;
+	return ZYNQMP_CSU_VERSION_SILICON;
 }
 
 #ifndef CONFIG_SYS_DCACHE_OFF