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>
diff --git a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-presence-config-native%.bbappend b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-presence-config-native%.bbappend
new file mode 100644
index 0000000..72d991c
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-presence-config-native%.bbappend
@@ -0,0 +1 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"