iwlwifi: move iwl4965_rf_kill_ct_config to iwl-core.c

This patch moves iwl4965_rf_kill_ct_config to iwl-core.c.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>