The patch removes the sysfs interface from iwl3945 and uses
the rfkill subsystem instead.

Original patch by Adel, I fixed the patch to work it properly.
Signed-off-by: NAdel Gadllah <adel.gadllah@gmail.com>
Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>