arm64: zynqmp: Handle CONFIG_BOARD_LATE_INIT via Kconfig

Disable BOARD_LATE_INIT via Kconfig.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/common/Kconfig b/common/Kconfig
index 3030da4..be2e1b8 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -557,7 +557,7 @@
 	  next reset.
 
 config BOARD_LATE_INIT
-	bool
+	bool "Execute Board late init"
 	help
 	  Sometimes board require some initialization code that might
 	  require once the actual init done, example saving board specific env,