shared/util: Move cb_data_new() helpers to util header

The helper doesn't really belong to the session.h and ELL also does
define the helper in util.h header.

include/session.h

@@ -56,23 +56,6 @@ enum connman_session_id_type {
 	CONNMAN_SESSION_ID_TYPE_LSM	= 3,
 };
 
-struct cb_data {
-	void *cb;
-	void *user_data;
-	void *data;
-};
-
-static inline struct cb_data *cb_data_new(void *cb, void *user_data)
-{
-	struct cb_data *ret;
-
-	ret = g_new0(struct cb_data, 1);
-	ret->cb = cb;
-	ret->user_data = user_data;
-
-	return ret;
-}
-
 struct connman_session;
 
 struct connman_session_config {

plugins/session_policy_local.c

@@ -42,6 +42,8 @@
 #include <connman/dbus.h>
 #include <connman/inotify.h>
 
+#include "src/shared/util.h"
+
 #define POLICYDIR STORAGEDIR "/session_policy_local"
 
 #define MODE		(S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | \

src/iptables.c

@@ -35,6 +35,7 @@
 #include <linux/netfilter_ipv4/ip_tables.h>
 
 #include "connman.h"
+#include "src/shared/util.h"
 
 /*
  * Some comments on how the iptables API works (some of them from the

src/nfacct.c

@@ -28,6 +28,7 @@
 
 #include "connman.h"
 #include "src/shared/nfacct.h"
+#include "src/shared/util.h"
 
 static struct nfacct_info *nfacct;
 

src/shared/util.h

@@ -21,6 +21,8 @@
  *
  */
 
+#include <glib.h>
+
 typedef void (*util_debug_func_t)(const char *str, void *user_data);
 
 void util_debug(util_debug_func_t function, void *user_data,
@@ -29,3 +31,20 @@ void util_debug(util_debug_func_t function, void *user_data,
 
 void util_hexdump(const char dir, const unsigned char *buf, size_t len,
 				util_debug_func_t function, void *user_data);
+
+struct cb_data {
+	void *cb;
+	void *user_data;
+	void *data;
+};
+
+static inline struct cb_data *cb_data_new(void *cb, void *user_data)
+{
+	struct cb_data *ret;
+
+	ret = g_new0(struct cb_data, 1);
+	ret->cb = cb;
+	ret->user_data = user_data;
+
+	return ret;
+}