Hi,

these patches fix the problem the people encounter with mm2 :
it add a pnp driver for floppy and i8042 (I don't touch the acpi driver 
as I was ask by the acpi people).

The 2 others patches limit the devices that are add in the pnp layer. So 
now people could load other acpi driver.

It is repported to work [1].

Please try it, so I could know if there no other acpi driver that are 
blocked.

Thanks

Matthieu

[1] http://marc.theaimsgroup.com/?l=linux-kernel&m=109959238701702&w=2

PS : in the mm3, the acpi people remove the lock of the acpi device that 
are in pnp layer, so you can load a pnp driver and a acpi driver for the 
same device like before...
So don't apply these patches on mm3 or use drivers/pnp/pnpacpi/core.c 
form mm2