[LinuxBIOS] Sun Ultra40 patches

[Roman Kononov]

This set of changes makes Sun Ultra40 working. Although not fully.

The working parts are: single CPU and nForce 2200 (CK804 Pro) with
all stuff connected to it. The still-not-working parts are: second
CPU and nForce 2050 with all stuff connected to it.

The changed files contain many things related to the non-working
second CPU and nForce 2050 commented out in order to make the
working system stable.

Thousand thanks to all who made the original Sun Ultra40 sources.

Signed-off-by: Roman Kononov