Due to a copy&paste error, the last byte of the shared memory was not
accessible via sysfs.
Reported-by: NDebora Grosse <debora@mds.com>
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>