Support 0xFF fru_type values

The OCC may put a value of 0xFF as the FRU type for some temperature
sensors to indicate they aren't available on the platform.  In this
case, the OCC device driver won't even make a tempX_input file for them.

Check for this case and just continue on.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I27dbc63270bfc60eed9d93eeb844625572839e38
1 file changed