Fix up recipes to address missing fan apps

Change to use the "softer" default value for PACKAGECONFIG by default.
Change to append extra paths in bbappend for Witherspoon.
Fix up/change some names in bbappend file for Witherspoon.

Resolves openbmc/openbmc#1765

Change-Id: I316e1e857b008ccd67e922698ee7e0a9c5d222fc
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
2 files changed