wspoon: Normalize native fan bbappend search paths

Set FILESEXTRAPATHS to PN for all native recipe appends.

Resolves: openbmc/openbmc#1991

Change-Id: I4f2fc9548dfab5d50970fcfcf1cb6082ae5d9288
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-conditions-config-native.bbappend b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-conditions-config-native.bbappend
index a53f0e2..72d991c 100644
--- a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-conditions-config-native.bbappend
+++ b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-conditions-config-native.bbappend
@@ -1 +1 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/phosphor-fan-control-zone-conditions-config:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"