meta-openpower: Rename bb file collections

Typical upstream layers have a -layer suffix.  Rename collections from
foo to foo-layer to match this de-facto standard.  Some existing layers
that use this convention include:

openembedded-layer
networking-layer
perl-layer
virtualization-layer

(From meta-openpower rev: 4719e692ac88694fa90a0cb60e5484fef6158351)

Change-Id: Ia5dee3c211b55be703001b624658aa479c0fd15c
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openpower/conf/layer.conf b/meta-openpower/conf/layer.conf
index 50d750d..dad2abf 100644
--- a/meta-openpower/conf/layer.conf
+++ b/meta-openpower/conf/layer.conf
@@ -5,7 +5,7 @@
 BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
             ${LAYERDIR}/recipes-*/*/*.bbappend"
 
-BBFILE_COLLECTIONS += "openpower"
-BBFILE_PATTERN_openpower = "^${LAYERDIR}/"
-LAYERVERSION_openpower = "1"
-LAYERSERIES_COMPAT_openpower = "sumo"
+BBFILE_COLLECTIONS += "openpower-layer"
+BBFILE_PATTERN_openpower-layer = "^${LAYERDIR}/"
+LAYERVERSION_openpower-layer = "1"
+LAYERSERIES_COMPAT_openpower-layer = "sumo"