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-ibm/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-config-native.bbappend b/meta-ibm/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-config-native.bbappend
index 96a8a11..6d4804d 100644
--- a/meta-ibm/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-config-native.bbappend
+++ b/meta-ibm/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-zone-config-native.bbappend
@@ -1,2 +1,2 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/phosphor-fan-control-zone-config:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"