TG3: Fix performance regression on 5705.

TG3: Fix performance regression on 5705.

patch 114342f2d38439cb1a54f1f724fa38729b093c48 in mainline.

A performance regression was introduced by the following commit:

    commit ee6a99b539a50b4e9398938a0a6d37f8bf911550
    Author: Michael Chan <mchan@broadcom.com>
    Date:   Wed Jul 18 21:49:10 2007 -0700

    [TG3]: Fix msi issue with kexec/kdump.

In making that change, the PCI latency timer and cache line size
registers were not restored after chip reset.  On the 5705, the
latency timer gets reset to 0 during chip reset and this causes
very poor performance.

Update version to 3.81.1

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>