Define pr_fmt() macro for prefixing the module name to all
pr_*() outputs, in order to increase log message clarity.
Signed-off-by: NEnrico Weigelt <info@metux.net>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NJacek Anaszewski <jacek.anaszewski@gmail.com>