[PATCH]: Add support for Apple Power Mac

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Hi!

The following three patches are required to get ofpathname to return
proper OF paths on Apple Power Macs.

The first patch adds adding the partition number to the end of the
OpenFirmware path when the logical device node points to a partition
instead of the whole disk.

The second patch adds support for differentiating between multiple
plugs of a SATA host. This is necessary for differentiating multiple
SATA drives on the Power Mac G5, for example.

And the third patch omits the strings "disk" and "scsi" when printing
OpenFirmware paths on a Power Mac.

With these changes applied, ofpathname returns the same OF paths
as Yaboot's ofpath script from the last Debian package which
is known to produce OF pathnames understood by the OpenFirmware
implemenation found on Power Macs.

Thanks,
Adrian