[PATCH] drivers/net/sk98lin/: possible cleanups

This patch contains the following possible cleanups:
- make needlessly global functions static
- remove unused code

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Stephen Hemminger <shemminger@osdl.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>