meta-ibm: fans: Create machine-specific structure

Yocto automatically adds files/<MACHINE>/ to the file path, take
advantage of this feature to simplify the recipe and directory
structure.

Tested: Built witherspoon, witherspoon-128, and swift, and verified
        they all had the correct fans files in their image.

Change-Id: I22850da7ebbf0c64faa790aaf9a4240d710580ca
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-events-config-native.bbappend b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-events-config-native.bbappend
index fae8d4c..72d991c 100644
--- a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-events-config-native.bbappend
+++ b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-control-events-config-native.bbappend
@@ -1 +1 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${MACHINE}-${PN}:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"