Patch allows w1_search() to be overwritten by bus_master drivers.
It is very usefull for several devices, like found in iPaq w1 bus master,
which does not support bit operations but has hardware implemented
search algorithm.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>