init: support owner/permission setting for sysfs attributes of devices

This should be much nicer than peppering init.rc with chown/chmod
directives.

Also, remove some dead code and obsolete comments.

Change-Id: I10895f10a9cf2f1226c8d12976cd3db3743da9ec
diff --git a/init/ueventd_parser.h b/init/ueventd_parser.h
index 48f9bb8..3684285 100644
--- a/init/ueventd_parser.h
+++ b/init/ueventd_parser.h
@@ -17,7 +17,7 @@
 #ifndef _INIT_UEVENTD_PARSER_H_
 #define _INIT_UEVENTD_PARSER_H_
 
-#define UEVENTD_PARSER_MAXARGS 4
+#define UEVENTD_PARSER_MAXARGS 5
 
 int ueventd_parse_config_file(const char *fn);
 void set_device_permission(int nargs, char **args);