drivers/net/tokenring: fix sparse warning: symbol shadows an earlier one

Impact: Remove redundant variables.

Fix this sparse warnings:
drivers/net/tokenring/lanstreamer.c:619:21: warning: symbol 'i' shadows an earlier one
drivers/net/tokenring/lanstreamer.c:589:13: originally declared here
drivers/net/tokenring/madgemc.c:695:34: warning: symbol 'tp' shadows an earlier one
drivers/net/tokenring/madgemc.c:689:26: originally declared here
drivers/net/tokenring/olympic.c:702:21: warning: symbol 'i' shadows an earlier one
drivers/net/tokenring/olympic.c:440:13: originally declared here

Signed-off-by: Hannes Eder <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/tokenring/lanstreamer.c

···
 	printk("SISR Mask = %04x\n", readw(streamer_mmio + SISR_MASK));
 #endif
 	do {
-		int i;
-
 		for (i = 0; i < SRB_COMMAND_SIZE; i += 2) {
 			writew(0, streamer_mmio + LAPDINC);
 		}

drivers/net/tokenring/madgemc.c

···
 	
 	len += sprintf(buf+len, "-------\n");
 	if (curcard) {
-		struct net_local *tp = netdev_priv(dev);
-		
 		len += sprintf(buf+len, "Card Revision: %d\n", curcard->cardrev);
 		len += sprintf(buf+len, "RAM Size: %dkb\n", curcard->ramsize);
 		len += sprintf(buf+len, "Cable type: %s\n", (curcard->cabletype)?"STP/DB9":"UTP/RJ-45");

drivers/net/tokenring/olympic.c

···
 	if (olympic_priv->olympic_network_monitor) { 
 		u8 __iomem *oat;
 		u8 __iomem *opt;
-		int i;
 		u8 addr[6];
 		oat = (olympic_priv->olympic_lap + olympic_priv->olympic_addr_table_addr);
 		opt = (olympic_priv->olympic_lap + olympic_priv->olympic_parms_addr);