orinoco: add function to retrieve current bssid

We will need this from the cfg80211 disassociate call.

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/orinoco/wext.c b/drivers/net/wireless/orinoco/wext.c
index f324bf9..f68bbe3 100644
--- a/drivers/net/wireless/orinoco/wext.c
+++ b/drivers/net/wireless/orinoco/wext.c
@@ -156,7 +156,6 @@
 {
 	struct orinoco_private *priv = ndev_priv(dev);
 
-	hermes_t *hw = &priv->hw;
 	int err = 0;
 	unsigned long flags;
 
@@ -164,8 +163,7 @@
 		return -EBUSY;
 
 	ap_addr->sa_family = ARPHRD_ETHER;
-	err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
-			      ETH_ALEN, NULL, ap_addr->sa_data);
+	err = orinoco_hw_get_current_bssid(priv, ap_addr->sa_data);
 
 	orinoco_unlock(priv, &flags);