meta-hpe: Changes to support Yocto syntax

Changes to support Yocto syntax changes and latest 'honister' release

Signed-off-by: Mike Garrett <mike.garrett@hpe.com>
Change-Id: I9cc4eb78b90d9b73bcd0440e6f6f6334fe459481
diff --git a/meta-hpe/meta-gxp/recipes-kernel/linux/linux-obmc.inc b/meta-hpe/meta-gxp/recipes-kernel/linux/linux-obmc.inc
index 40de352..5c172b1 100644
--- a/meta-hpe/meta-gxp/recipes-kernel/linux/linux-obmc.inc
+++ b/meta-hpe/meta-gxp/recipes-kernel/linux/linux-obmc.inc
@@ -10,7 +10,7 @@
 SRC_URI = "${KSRC}"
 SRC_URI += " file://defconfig"
 
-FILESEXTRAPATHS_prepend_linux-obmc := "${THISDIR}/linux-obmc:"
+FILESEXTRAPATHS:prepend_linux-obmc := "${THISDIR}/linux-obmc:"
 
 LINUX_VERSION_EXTENSION ?= "-${SRCREV}"