ethtool: fix drvinfo strings set in drivers

Use strlcpy where possible to ensure the string is \0 terminated.
Use always sizeof(string) instead of 32, ETHTOOL_BUSINFO_LEN
and custom defines.
Use snprintf instead of sprint.
Remove unnecessary inits of ->fw_version
Remove unnecessary inits of drvinfo struct.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/xircom/xirc2ps_cs.c

@@ -1412,7 +1412,8 @@ static void netdev_get_drvinfo(struct net_device *dev,
 			       struct ethtool_drvinfo *info)
 {
 	strlcpy(info->driver, "xirc2ps_cs", sizeof(info->driver));
-	sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
+	snprintf(info->bus_info, sizeof(info->bus_info), "PCMCIA 0x%lx",
+		 dev->base_addr);
 }
 
 static const struct ethtool_ops netdev_ethtool_ops = {