iwlwifi: remove unneeded __packed

struct iwl_queue is not part of firmware interface, so __packed is not
needed. Remove it since is may affect performance.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -138,7 +138,7 @@ struct iwl_queue {
 				* space more than this */
 	int high_mark;         /* high watermark, stop queue if free
 				* space less than this */
-} __packed;
+};
 
 /* One for each TFD */
 struct iwl_tx_info {