Move the definition of ipchksum into its own header file.

Change-Id: Ifb7c18f9ca566bd50ca138ffd8af951375089537
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1722
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)

payloads/libpayload/include/coreboot_tables.h

@@ -31,6 +31,7 @@
 #define _COREBOOT_TABLES_H
 
 #include <arch/types.h>
+#include <ipchksum.h>
 
 struct cbuint64 {
 	u32 lo;

payloads/libpayload/include/ipchksum.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but without any warranty; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __IPCHKSUM_H__
+#define __IPCHKSUM_H__
+
+/**
+ * @defgroup ipchecksum IP checksum functions
+ * @{
+ */
+unsigned short ipchksum(const void *ptr, unsigned long nbytes);
+/** @} */
+
+#endif

payloads/libpayload/include/libpayload.h

@@ -45,6 +45,7 @@
 
 #include <libpayload-config.h>
 #include <ctype.h>
+#include <ipchksum.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdarg.h>
@@ -262,13 +263,6 @@ void console_add_input_driver(struct console_input_driver *in);
 #define havechar havekey
 /** @} */
 
-/**
- * @defgroup ipchecksum IP checksum functions
- * @{
- */
-unsigned short ipchksum(const void *ptr, unsigned long nbytes);
-/** @} */
-
 
 /**
  * @defgroup exec Execution functions