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-s2600wf/conf/bblayers.conf.sample b/meta-intel-openbmc/meta-s2600wf/conf/bblayers.conf.sample
index cbaf88b..1cfc105 100644
--- a/meta-intel-openbmc/meta-s2600wf/conf/bblayers.conf.sample
+++ b/meta-intel-openbmc/meta-s2600wf/conf/bblayers.conf.sample
@@ -1,6 +1,6 @@
 # LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf
 # changes incompatibly
-LCONF_VERSION = "9"
+LCONF_VERSION = "8"
 
 BBPATH = "${TOPDIR}"
 BBFILES ?= ""