[PATCH] 3c59x: convert to use of pci_iomap API

Convert 3c59x driver to use pci_iomap API.  This makes it easier to enable
the use of memory-mapped PCI I/O resources.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>