Do not issue RX and TX reset commands in xl_stop() and xl_init(). On the

Do not issue RX and TX reset commands in xl_stop() and xl_init(). On the
3c905B, the RX and TX reset commands also reset the cyclone chip's internal
PHY, which causes it to restart its autonegotiation session. This takes a
second or two to complete, which makes the interface seem to stop responding
for a few seconds every time you do something that reinitializes it.

Issuing the RX and TX resets on the older 3c905 boomerang adapters doesn't
cause any delay because the boomerang chip requires an external PHY.

This should fix the problem where people doing network installs via 3c905B
cards experience a delay after the interface is first initialized, among
other things.