[LinuxBIOS] [PATCH] Do not hardcode iasl path.

[Uwe Hermann]

Change the path to iasl from '/usr/sbin/iasl' to 'iasl' in order to not
hardcode it in the config files. The path is different on Debian, for
example (closes #9).

Signed-off-by: Uwe Hermann

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Can somebody please test (on SUSE?) whether this works as expected, or
whether /usr/sbin needs to be added to PATH somewhere...

Uwe.