Fix compilation without CONFIG_NETPOLL_RX

Poll code (in net-drivers-2.5-exp) was calling undefined function.

netpoll for eepro100

This was in Ingo's old original netconsole patches.

No need to use disable_irq because tg3 is properly spinlocked.
Can just call the interrupt handler directly.

netpoll for pcnet32

netpoll for amd8111e

Netpoll for tulip. Uses disable_irq() because tulip is unfortunately
still lockless.

>From the old -aa tree with minor changes. Orginally done
by Andrea I think.

into home.osdl.org:/home/torvalds/v2.5/linux

Spotted by Matteo Croce 

into home.osdl.org:/home/torvalds/v2.5/linux

From Martin Diehl.

From Martin Diehl.

Also, make sir-dev locking compatible with irport.
From Martin Diehl.

[ATM]: br2684 incorrectly handles frames recvd with FCS (by Alex Zeffertt <ajz@cambridgebroadband.com>)