Move vsprintf functions into their own header

common.h is very large, so before changing the vsprintf functions, move the
prototypes into their own header file.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/common.h

@@ -733,16 +733,7 @@ void uuid_str_to_bin(const char *uuid, unsigned char *out);
 int uuid_str_valid(const char *uuid);
 
 /* lib/vsprintf.c */
-ulong	simple_strtoul(const char *cp,char **endp,unsigned int base);
-int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
-unsigned long long	simple_strtoull(const char *cp,char **endp,unsigned int base);
-long	simple_strtol(const char *cp,char **endp,unsigned int base);
-void	panic(const char *fmt, ...)
-		__attribute__ ((format (__printf__, 1, 2), noreturn));
-int	sprintf(char * buf, const char *fmt, ...)
-		__attribute__ ((format (__printf__, 2, 3)));
-int	vsprintf(char *buf, const char *fmt, va_list args);
-char *simple_itoa(ulong i);
+#include <vsprintf.h>
 
 /* lib/strmhz.c */
 char *	strmhz(char *buf, unsigned long hz);

include/vsprintf.h

@@ -0,0 +1,39 @@
+/*
+ * (C) Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 __VSPRINTF_H
+#define __VSPRINTF_H
+
+ulong simple_strtoul(const char *cp, char **endp, unsigned int base);
+int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
+unsigned long long simple_strtoull(const char *cp, char **endp,
+					unsigned int base);
+long simple_strtol(const char *cp, char **endp, unsigned int base);
+void panic(const char *fmt, ...)
+		__attribute__ ((format (__printf__, 1, 2), noreturn));
+int sprintf(char *buf, const char *fmt, ...)
+		__attribute__ ((format (__printf__, 2, 3)));
+int vsprintf(char *buf, const char *fmt, va_list args);
+char *simple_itoa(ulong i);
+
+#endif