libertas: rename packetfilter to mac_control

The CMD_MAC_CONTROL can be used for other things than just filtering
packets, e.g. to enable and disable WMM. This uses the same term mac_control
for the define, the function and the shadow value in struct lbs_private.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index ff2c046..4122a32 100644
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -252,7 +252,7 @@
 	struct sk_buff *currenttxskb;
 
 	/** NIC Operation characteristics */
-	u16 currentpacketfilter;
+	u16 mac_control;
 	u32 connect_status;
 	u32 mesh_connect_status;
 	u16 regioncode;