drivers/net/at1700.c: fix sparse warning: symbol shadows an earlier one

Impact: Move variable declaration to a more inner scope.

Fix this sparse warning:
  drivers/net/at1700.c:846:21: warning: symbol 'i' shadows an earlier one
  drivers/net/at1700.c:831:13: originally declared here
Signed-off-by: NHannes Eder <hannes@hanneseder.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/at1700.c

@@ -828,7 +828,6 @@ set_rx_mode(struct net_device *dev)
 	struct net_local *lp = netdev_priv(dev);
 	unsigned char mc_filter[8];		 /* Multicast hash filter */
 	unsigned long flags;
-	int i;
 
 	if (dev->flags & IFF_PROMISC) {
 		memset(mc_filter, 0xff, sizeof(mc_filter));
@@ -857,6 +856,7 @@ set_rx_mode(struct net_device *dev)
 
 	spin_lock_irqsave (&lp->lock, flags);
 	if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
+		int i;
 		int saved_bank = inw(ioaddr + CONFIG_0);
 		/* Switch to bank 1 and set the multicast table. */
 		outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);