Basic support for Firestone and Garrison systems

Firestone and Garrison are IBM branded OpenPOWER systems.
diff --git a/meta-garrison/conf/layer.conf b/meta-garrison/conf/layer.conf
new file mode 100644
index 0000000..ef803c0
--- /dev/null
+++ b/meta-garrison/conf/layer.conf
@@ -0,0 +1,9 @@
+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+# We have recipes-* directories, add to BBFILES
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
+            ${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "garrison"
+BBFILE_PATTERN_garrison = ""