staging: sbe-2t3e3: fix sparse warnings

warnings:

drivers/staging/sbe-2t3e3/netdev.c:30:56: warning: incorrect type in initializer (different address spaces)
drivers/staging/sbe-2t3e3/netdev.c:30:56:    expected void *data
drivers/staging/sbe-2t3e3/netdev.c:30:56:    got void [noderef] <asn:1>*
drivers/staging/sbe-2t3e3/netdev.c:48:44: warning: incorrect type in argument 2 (different address spaces)
drivers/staging/sbe-2t3e3/netdev.c:48:44:    expected void const [noderef] <asn:1>*from
drivers/staging/sbe-2t3e3/netdev.c:48:44:    got void *data
drivers/staging/sbe-2t3e3/netdev.c:54:34: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/sbe-2t3e3/netdev.c:54:34:    expected void [noderef] <asn:1>*dst
drivers/staging/sbe-2t3e3/netdev.c:54:34:    got void *data

type must be __user.
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sbe-2t3e3/netdev.c

@@ -27,7 +27,7 @@ int t3e3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	int cmd_2t3e3, len, rlen;
 	t3e3_param_t param;
 	t3e3_resp_t  resp;
-	void *data = ifr->ifr_data + sizeof(cmd_2t3e3) + sizeof(len);
+	void __user *data = ifr->ifr_data + sizeof(cmd_2t3e3) + sizeof(len);
 
 	if (cmd == SIOCWANDEV)
 		return hdlc_ioctl(dev, ifr, cmd);