meta-openpower: add common/recipes-* tree

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/conf/layer.conf b/conf/layer.conf
index a902796..46c5a5d 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -1,5 +1,8 @@
 # We have a conf and classes directory, add to BBPATH
 BBPATH .= ":${LAYERDIR}"
 
+BBFILES += "${LAYERDIR}/common/recipes-*/*/*.bb \
+            ${LAYERDIR}/common/recipes-*/*/*.bbappend"
+
 BBFILE_COLLECTIONS += "openpower"
 BBFILE_PATTERN_openpower = ""