iwlwifi: add comments to Tx commands

Add comments to Tx commands

Clean up unused definitions in iwl-3945-commands.h

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2 files changed