[PATCH] w1: Adds a sysfs entry (w1_master_search) that allows you to disable/enable periodic searches.

Adds a sysfs entry (w1_master_search) that allows you to disable/enable
periodic searches.
Signed-off-by: NBen Gardner <bgardner@wabtec.com>
Signed-off-by: NEvgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>