tools: acrn-crashlog: new api in strutils

This patch provides an new api to split string by extended regexp(ere).

Tracked-On: #1254
Signed-off-by: Liu, Xinwu <xinwu.liu@intel.com>
Reviewed-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Chen Gang <gang.c.chen@intel.com>

tools/acrn-crashlog/common/include/strutils.h

@@ -13,5 +13,6 @@ char *strrstr(const char *s, const char *str);
 char *next_line(char *buf);
 char *strtrim(char *str);
 int strcnt(char *str, char c);
-
+int str_split_ere(const char *str, size_t slen,
+		const char *fmt, size_t flen, ...);
 #endif