Add meta-hxt and meta-stardragon-rep2

Initial a new platfom for ARM system

(From meta-hxt rev: a74be8cd66acd132d82daf45b6e92c89578c98b0)

Change-Id: Iee29816c86457ac2e07a55184fe7cc1aeb1ba216
Signed-off-by: Yuan Yao <yao.yuan@hxt-semitech.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-hxt/conf/layer.conf b/meta-hxt/conf/layer.conf
new file mode 100644
index 0000000..bc33c2b
--- /dev/null
+++ b/meta-hxt/conf/layer.conf
@@ -0,0 +1,5 @@
+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+BBFILE_COLLECTIONS += "hxt"
+BBFILE_PATTERN_hxt = ""