meta-google: ipmi-fru-sh: Add lookup for FruDevice names

This makes it possible to specify a FRU lookup by a dynamically
discovered FRUs from entity manager.

Change-Id: Icf83aa3eff1cbc08a8fa3f99754e5c10e3e583fc
Signed-off-by: William A. Kennington III <wak@google.com>