add sunray2, fsp2 based soc

* add fsp2 meta
* add sunray2 evaluation board
* create zobmc ppc kernel for fsp2 based boards
* remove phosphor gpio keys
* only -k core-image-minimal working fine for now due to
  problems with workbook and ipmi dependencies

Change-Id: Id84614a78bc875206ccc0450885261258e4adb26
Signed-off-by: Ivan Mikhaylov <ivan@de.ibm.com>
diff --git a/meta-z/conf/conf-notes.txt b/meta-z/conf/conf-notes.txt
new file mode 100644
index 0000000..9b3c01a
--- /dev/null
+++ b/meta-z/conf/conf-notes.txt
@@ -0,0 +1,2 @@
+Common targets are:
+     obmc-phosphor-image