net: eepro100: Fix remaining checkpatch issues

net: eepro100: Fix remaining checkpatch issues

This is automated cleanup via checkpatch, no functional change.
./scripts/checkpatch.pl --show-types -f drivers/net/eepro100.c
./scripts/checkpatch.pl -f --fix --fix-inplace drivers/net/eepro100.c

This fixes all the remaining errors except a couple of comments which
are longer than 80 characters, all the volatile misuse and all the
camelcase, that needs a separate patch.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>