Bug#853122: sp5100_tco: I/O address 0x0cd6 already in use

[Boszormenyi Zoltan <zboszor@pr.hu>]

Hi,

I have converted both i2c-piix4 and sp5100_tco to
use request_muxed_region() and use it instead of
request_region(). The mutex lock / unlock around
port I/O accesses in i2c-piix4 were replaced by
request_muxed_region() / release_region(), it works
in a similar way.

The same treatment was added to sp5100_tco.

I sent the patch to two bugzillas:
https://bugzilla.kernel.org/show_bug.cgi?id=170741
https://bugzilla.redhat.com/show_bug.cgi?id=1406844

It works for me, please test it.

Best regards,
Zoltán Böszörményi