meta-intel-openbmc: prep for new override syntax

Ran `scripts/contrib/convert-overrides.py` from upstream Yocto and
fixed up a few by hand that were missed.

Tested: Built s2600wf.

Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Change-Id: I983385c8cdd4e2727c5c1a3d56952d6ac7fd89cc
diff --git a/meta-intel-openbmc/meta-common/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend b/meta-intel-openbmc/meta-common/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend
index e8cbbe9..29b9858 100644
--- a/meta-intel-openbmc/meta-common/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend
+++ b/meta-intel-openbmc/meta-common/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend
@@ -1,8 +1,8 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
-SRC_URI_append = " file://ipmb-channels.json"
+SRC_URI:append = " file://ipmb-channels.json"
 
-do_install_append(){
+do_install:append(){
     install -m 0644 -D ${WORKDIR}/ipmb-channels.json \
                    ${D}/usr/share/ipmbbridge
 }