iwlwifi: pcie: some little cleanups

do some little cleanups in tx.c - eliminate duplicate checks,
use locally cached fields and predefined macros.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Eliad Peller 2013-07-16 17:53:43 +03:00 • committed by Johannes Berg
commit 1092b9bc0c