drivers/net: fix sparse warnings: make symbols static

Fix this sparse warnings:

drivers/net/3c523.c:350:6: warning: symbol 'alloc586' was not declared. Should it be static?
drivers/net/cs89x0.c:1029:14: warning: symbol 'reset_chip' was not declared. Should it be static?
drivers/net/eepro.c:1399:1: warning: symbol 'read_eeprom' was not declared. Should it be static?
drivers/net/plip.c:1020:5: warning: symbol 'plip_hard_header_cache' was not declared. Should it be static?
drivers/net/s2io.c:5116:6: warning: symbol 'do_s2io_store_unicast_mc' was not declared. Should it be static?
drivers/net/smc9194.c:767:12: warning: symbol 'smc_findirq' was not declared. Should it be static?

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

drivers/net/3c523.c

···
  * set iscp at the right place, called by elmc_probe and open586.
  */
 
-void alloc586(struct net_device *dev)
+static void alloc586(struct net_device *dev)
 {
 	struct priv *p = netdev_priv(dev);
 

drivers/net/cs89x0.c

···
 
 #endif	/* ALLOW_DMA */
 
-void  __init reset_chip(struct net_device *dev)
+static void __init reset_chip(struct net_device *dev)
 {
 #if !defined(CONFIG_MACH_MX31ADS)
 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)

drivers/net/eepro.c

···
 #define eeprom_delay() { udelay(40); }
 #define EE_READ_CMD (6 << 6)
 
-int
+static int
 read_eeprom(int ioaddr, int location, struct net_device *dev)
 {
 	int i;

drivers/net/plip.c

···
 	return ret;
 }
 
-int plip_hard_header_cache(const struct neighbour *neigh,
-                           struct hh_cache *hh)
+static int plip_hard_header_cache(const struct neighbour *neigh,
+				  struct hh_cache *hh)
 {
 	int ret;
 

drivers/net/s2io.c

···
 /* read from CAM unicast & multicast addresses and store it in
  * def_mac_addr structure
  */
-void do_s2io_store_unicast_mc(struct s2io_nic *sp)
+static void do_s2io_store_unicast_mc(struct s2io_nic *sp)
 {
 	int offset;
 	u64 mac_addr = 0x0;

drivers/net/smc9194.c

···
  . interrupt, so an auto-detect routine can detect it, and find the IRQ,
  ------------------------------------------------------------------------
 */
-int __init smc_findirq( int ioaddr )
+static int __init smc_findirq(int ioaddr)
 {
 #ifndef NO_AUTOPROBE
 	int	timeout = 20;