net: eepro100: Fix build warnings

When building katmai, it reports quite a lot

  warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

Fix this by casting the dev->iobase with u_long.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
1 file changed