Add meta-hxt and meta-stardragon-rep2

Initial a new platfom for ARM system

Change-Id: I7309e4387f806b4c8e45a57bd5474a232734c71a
Signed-off-by: Yuan Yao <yao.yuan@hxt-semitech.com>
diff --git a/meta-stardragon4800-rep2/conf/conf-notes.txt b/meta-stardragon4800-rep2/conf/conf-notes.txt
new file mode 100644
index 0000000..9b3c01a
--- /dev/null
+++ b/meta-stardragon4800-rep2/conf/conf-notes.txt
@@ -0,0 +1,2 @@
+Common targets are:
+     obmc-phosphor-image