meta-facebook: 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 bletchley and tiogapass.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I0489ba007132901697e4ef1a29b03a3591b3ee3b
diff --git a/meta-facebook/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend b/meta-facebook/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend
index 1a9d9e0..9557c26 100644
--- a/meta-facebook/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend
+++ b/meta-facebook/recipes-phosphor/ipmi/phosphor-ipmi-ipmb_%.bbappend
@@ -1,8 +1,8 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}/${MACHINE}:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}/${MACHINE}:"
 
-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
 }