libpayload: Add strerror

Change-Id: I33d45ad7d09473b8c6f5b7ee5fbadc0d184f9dcd
Signed-off-by: Stefan Tauner <stefan.tauner@gmx.at>
Reviewed-on: http://review.coreboot.org/3537
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.huber@secunet.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/payloads/libpayload/include/string.h b/payloads/libpayload/include/string.h
index 9e4f791a7d..952261fa15 100644
--- a/payloads/libpayload/include/string.h
+++ b/payloads/libpayload/include/string.h
@@ -63,8 +63,9 @@ char *strstr(const char *h, const char *n);
 char *strsep(char **stringp, const char *delim);
 size_t strspn(const char *s, const char *a);
 size_t strcspn(const char *s, const char *a);
-char* strtok(char *str, const char *delim);
-char* strtok_r(char *str, const char *delim, char **ptr);
+char *strtok(char *str, const char *delim);
+char *strtok_r(char *str, const char *delim, char **ptr);
+char *strerror(int errnum);
 /** @} */
 
 /**