[PATCH] sky2: allow ethtool debug access to all of PCI space

For debugging, it is useful to allow ethtool to dump all of
the PCI mapped space. There is one small set of registers for RAM
diagnostics that needs to be avoided to prevent hanging, but all
the rest is accessible.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>