arm64: zynqmp: Protect board_late_init function

Function should be compiled only when CONFIG_BOARD_LATE_INIT is defined.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index 13c404b..1dcb26d 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -489,6 +489,7 @@
 {
 }
 
+#if defined(CONFIG_BOARD_LATE_INIT)
 static const struct {
 	u32 bit;
 	const char *name;
@@ -655,6 +656,7 @@
 
 	return 0;
 }
+#endif
 
 int checkboard(void)
 {