logging: add accessor for log level

src/logging/nm-logging.c

@@ -209,6 +209,12 @@ nm_logging_domains_to_string (void)
 	return g_string_free (str, FALSE);
 }
 
+gboolean
+nm_logging_level_enabled (guint32 level)
+{
+	return !!(log_level & level);
+}
+
 void _nm_log (const char *loc,
               const char *func,
               guint32 domain,

src/logging/nm-logging.h

@@ -90,6 +90,7 @@ void _nm_log (const char *loc, const char *func,
 
 const char *nm_logging_level_to_string (void);
 char *nm_logging_domains_to_string (void);
+gboolean nm_logging_level_enabled (guint32 level);
 
 /* Undefine the nm-utils.h logging stuff to ensure errors */
 #undef nm_print_backtrace