zynq: Fix incorrect header name

Zynq common configuration is placed in zynq-common.h
not zynq_common.h.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/include/configs/zynq_zc70x.h b/include/configs/zynq_zc70x.h
index 673660e..de0e241 100644
--- a/include/configs/zynq_zc70x.h
+++ b/include/configs/zynq_zc70x.h
@@ -2,7 +2,7 @@
  * (C) Copyright 2013 Xilinx, Inc.
  *
  * Configuration settings for the Xilinx Zynq ZC702 and ZC706 boards
- * See zynq_common.h for Zynq common configs
+ * See zynq-common.h for Zynq common configs
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
diff --git a/include/configs/zynq_zed.h b/include/configs/zynq_zed.h
index 412dede..274140c 100644
--- a/include/configs/zynq_zed.h
+++ b/include/configs/zynq_zed.h
@@ -2,7 +2,7 @@
  * (C) Copyright 2013 Xilinx, Inc.
  *
  * Configuration for Zynq Evaluation and Development Board - ZedBoard
- * See zynq_common.h for Zynq common configs
+ * See zynq-common.h for Zynq common configs
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */