wspoon: Inhibit phosphor-fan-presence-mrw

Use a hardcoded config file for the Witherspoon
fan presence configuration.

Hopefully a somewhat temporary workaround of missing tags in the
Witherspoon MRW.

Change-Id: If702959012a3ac627e5fb3e3307f2ee79a9af3d0
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
3 files changed