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

Fix this sparse warnings:

  drivers/net/arcnet/capmode.c:64:6: warning: symbol 'arcnet_cap_init' was not declared. Should it be static?
  drivers/net/arcnet/com90xx.c:586:5: warning: symbol 'com90xx_reset' was not declared. Should it be static?
Signed-off-by: NHannes Eder <hannes@hanneseder.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/arcnet/capmode.c

@@ -61,7 +61,7 @@ static struct ArcProto capmode_proto =
 };
 
 
-void arcnet_cap_init(void)
+static void arcnet_cap_init(void)
 {
 	int count;
 

drivers/net/arcnet/com90xx.c

@@ -583,7 +583,7 @@ static void com90xx_setmask(struct net_device *dev, int mask)
  *
  * However, it does make sure the card is in a defined state.
  */
-int com90xx_reset(struct net_device *dev, int really_reset)
+static int com90xx_reset(struct net_device *dev, int really_reset)
 {
 	struct arcnet_local *lp = netdev_priv(dev);
 	short ioaddr = dev->base_addr;