bna: CheckPatch Cleanup

Change details:
 - Driver cleanup as per new checkpatch v0.31

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bna/bna_txrx.c b/drivers/net/bna/bna_txrx.c
index 380085c..2c06e08 100644
--- a/drivers/net/bna/bna_txrx.c
+++ b/drivers/net/bna/bna_txrx.c
@@ -734,7 +734,7 @@
 	/**
 	 *  Note: Do not add rxf_clear_packet_filter here.
 	 * It will overstep mbox when this transition happens:
-	 * 	cam_fltr_mod_wait -> cam_fltr_clr_wait on RXF_E_STOP event
+	 *	cam_fltr_mod_wait -> cam_fltr_clr_wait on RXF_E_STOP event
 	 */
 }
 
@@ -771,7 +771,7 @@
 	/**
 	 * NOTE: Do not add  rxf_disable here.
 	 * It will overstep mbox when this transition happens:
-	 * 	start_wait -> stop_wait on RXF_E_STOP event
+	 *	start_wait -> stop_wait on RXF_E_STOP event
 	 */
 }