meta-ibm: prep for new override syntax

Change-Id: I9116ed7260e369136acb39eec15075db2d4dbeba
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/meta-ibm/meta-romulus/recipes-phosphor/fans/phosphor-fan-control-zone-config.bbappend b/meta-ibm/meta-romulus/recipes-phosphor/fans/phosphor-fan-control-zone-config.bbappend
index 83b54c4..457d039 100644
--- a/meta-ibm/meta-romulus/recipes-phosphor/fans/phosphor-fan-control-zone-config.bbappend
+++ b/meta-ibm/meta-romulus/recipes-phosphor/fans/phosphor-fan-control-zone-config.bbappend
@@ -1,2 +1,2 @@
-FILESEXTRAPATHS_prepend_romulus := "${THISDIR}/${BPN}:"
+FILESEXTRAPATHS:prepend:romulus := "${THISDIR}/${BPN}:"