This patch makes use of iwl_rb_status also in 3945. The structure
for 3945 is not the same but since only closed_rb_num filed is used
in both cases there is no reason to duplicate it.
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>