meta-evb: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I7a755976c2144356314faef7cf1f226ae18dc884
diff --git a/meta-evb/meta-evb-enclustra/conf/layer.conf b/meta-evb/meta-evb-enclustra/conf/layer.conf
index 35ca2eb..e83298f 100644
--- a/meta-evb/meta-evb-enclustra/conf/layer.conf
+++ b/meta-evb/meta-evb-enclustra/conf/layer.conf
@@ -3,4 +3,4 @@
 
 BBFILE_COLLECTIONS += "evb-enclustra"
 BBFILE_PATTERN_evb-enclustra = ""
-LAYERSERIES_COMPAT_evb-enclustra = "gatesgarth hardknott"
+LAYERSERIES_COMPAT_evb-enclustra = "gatesgarth hardknott honister"
diff --git a/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/layer.conf b/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/layer.conf
index 6cc86c4..ea08f5a 100644
--- a/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/layer.conf
+++ b/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/layer.conf
@@ -7,4 +7,4 @@
 
 BBFILE_COLLECTIONS += "evb-zx3-pm3"
 BBFILE_PATTERN_evb-zx3-pm3 = ""
-LAYERSERIES_COMPAT_evb-zx3-pm3 = "gatesgarth hardknott"
+LAYERSERIES_COMPAT_evb-zx3-pm3 = "gatesgarth hardknott honister"
diff --git a/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/local.conf.sample b/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/local.conf.sample
index e1de484..ab8079d 100644
--- a/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/local.conf.sample
+++ b/meta-evb/meta-evb-enclustra/meta-evb-zx3-pm3/conf/local.conf.sample
@@ -1,11 +1,11 @@
 MACHINE ??= "evb-zx3-pm3"
 DISTRO ?= "openbmc-phosphor"
 PACKAGE_CLASSES ?= "package_rpm"
-SANITY_TESTED_DISTROS_append ?= " *"
-EXTRA_IMAGE_FEATURES = "debug-tweaks"
-USER_CLASSES ?= "buildstats image-prelink"
+SANITY_TESTED_DISTROS:append ?= " *"
+EXTRA_IMAGE_FEATURES ?= "debug-tweaks"
+USER_CLASSES ?= "buildstats"
 PATCHRESOLVE = "noop"
-BB_DISKMON_DIRS = "\
+BB_DISKMON_DIRS ??= "\
     STOPTASKS,${TMPDIR},1G,100K \
     STOPTASKS,${DL_DIR},1G,100K \
     STOPTASKS,${SSTATE_DIR},1G,100K \