staging: vt6655: fix sparse warnings: incorrect argument type

this patch fixes following sparse warnings:

drivers/staging/vt6655/device_main.c:1503:25: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/vt6655/device_main.c:1503:25:    expected void [noderef] <asn:2>*<noident>
drivers/staging/vt6655/device_main.c:1503:25:    got struct vnt_private *
drivers/staging/vt6655/device_main.c:1503:25: warning: incorrect type in argument 2 (different address spaces)
drivers/staging/vt6655/device_main.c:1503:25:    expected void [noderef] <asn:2>*<noident>
drivers/staging/vt6655/device_main.c:1503:25:    got struct vnt_private *
drivers/staging/vt6655/device_main.c:1505:25: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/vt6655/device_main.c:1505:25:    expected void [noderef] <asn:2>*<noident>
drivers/staging/vt6655/device_main.c:1505:25:    got struct vnt_private *
drivers/staging/vt6655/device_main.c:1505:25: warning: incorrect type in argument 2 (different address spaces)
drivers/staging/vt6655/device_main.c:1505:25:    expected void [noderef] <asn:2>*<noident>
drivers/staging/vt6655/device_main.c:1505:25:    got struct vnt_private *

Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/device_main.c

@@ -1500,9 +1500,11 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 		if (conf->enable_beacon) {
 			vnt_beacon_enable(priv, vif, conf);
 
-			MACvRegBitsOn(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
+			MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
+				      TCR_AUTOBCNTX);
 		} else {
-			MACvRegBitsOff(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
+			MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
+				       TCR_AUTOBCNTX);
 		}
 	}