xilinx: Introduce board_late_init_xilinx()

This function should keep common shared late configurations for Xilinx
SoCs.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/common/board.h b/board/xilinx/common/board.h
new file mode 100644
index 0000000..180dfbc
--- /dev/null
+++ b/board/xilinx/common/board.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * (C) Copyright 2020 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ */
+
+#ifndef _BOARD_XILINX_COMMON_BOARD_H
+#define _BOARD_XILINX_COMMON_BOARD_H
+
+int board_late_init_xilinx(void);
+
+#endif /* BOARD_XILINX_COMMON_BOARD_H */