drivers/net/tokenring: fix sparse warnings: make symbols static

Fix this sparse warnings:

  drivers/net/tokenring/ibmtr.c:1840:6: warning: symbol 'tok_rerun' was not declared. Should it be static?
  drivers/net/tokenring/madgemc.c:469:16: warning: symbol 'madgemc_setnselout_pins' was not declared. Should it be static?
  drivers/net/tokenring/proteon.c:286:16: warning: symbol 'proteon_setnselout_pins' was not declared. Should it be static?
  drivers/net/tokenring/skisa.c:303:16: warning: symbol 'sk_isa_setnselout_pins' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tokenring/ibmtr.c

@@ -1837,8 +1837,8 @@ static void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev)
 
 /*****************************************************************************/
 
-void tok_rerun(unsigned long dev_addr){
-
+static void tok_rerun(unsigned long dev_addr)
+{
 	struct net_device *dev = (struct net_device *)dev_addr;
 	struct tok_info *ti = netdev_priv(dev);
 

drivers/net/tokenring/madgemc.c

@@ -466,7 +466,7 @@ static irqreturn_t madgemc_interrupt(int irq, void *dev_id)
  * zero to leave the TMS NSELOUT bits unaffected.
  *
  */
-unsigned short madgemc_setnselout_pins(struct net_device *dev)
+static unsigned short madgemc_setnselout_pins(struct net_device *dev)
 {
 	unsigned char reg1;
 	struct net_local *tp = netdev_priv(dev);

drivers/net/tokenring/proteon.c

@@ -283,7 +283,7 @@ static void proteon_read_eeprom(struct net_device *dev)
 		dev->dev_addr[i] = proteon_sifreadw(dev, SIFINC) >> 8;
 }
 
-unsigned short proteon_setnselout_pins(struct net_device *dev)
+static unsigned short proteon_setnselout_pins(struct net_device *dev)
 {
 	return 0;
 }

drivers/net/tokenring/skisa.c

@@ -300,7 +300,7 @@ static void sk_isa_read_eeprom(struct net_device *dev)
 		dev->dev_addr[i] = sk_isa_sifreadw(dev, SIFINC) >> 8;
 }
 
-unsigned short sk_isa_setnselout_pins(struct net_device *dev)
+static unsigned short sk_isa_setnselout_pins(struct net_device *dev)
 {
 	return 0;
 }