util: add a streq helper

This is a little easier to read than strcmp.

Bug: None
Test: unittests pass
Change-Id: Idccb94c2cce84b11bd9bb9eeab699254baef529d
diff --git a/util.h b/util.h
index 5ed9f94..3698263 100644
--- a/util.h
+++ b/util.h
@@ -12,6 +12,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
 #include <syslog.h>
 #include <unistd.h>
@@ -235,6 +236,14 @@
 char *strip(char *s);
 
 /*
+ * streq: determine whether two strings are equal.
+ */
+static inline bool streq(const char *s1, const char *s2)
+{
+	return strcmp(s1, s2) == 0;
+}
+
+/*
  * tokenize: locate the next token in @stringp using the @delim
  * @stringp A pointer to the string to scan for tokens
  * @delim   The delimiter to split by