rndis_wlan: add missing padding to struct rndis_80211_remove_key

OID_802_11_REMOVE_KEY failed with invalid length error, add missing padding to
structure fix this.
Signed-off-by: NJussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rndis_wlan.c

@@ -327,6 +327,7 @@ struct ndis_80211_remove_key {
 	__le32 size;
 	__le32 index;
 	u8 bssid[6];
+	u8 padding[2];
 } __attribute__((packed));
 
 struct ndis_config_param {