iwl3945 : use iwl_activate_qos

3945 can use iwl_activate_qos instead of iwl3945_activate_qos.
Patch does two things
1) Patch adds iwl_activate_qos in core library.
2) 3945 makes use of iwl_activate_qos.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
4 files changed