Add Ulefone Armor 6

* Add new OEM Ulefone
* Add layout file for it's device Armor 6
* Update config to show newly added oem and it's devcies

Signed-off-by: chankruze <chankruze@gmail.com>
Change-Id: I1d1505a7f9548263876303f9cf0dba11f87ee3ad
diff --git a/_oem/ulefone.markdown b/_oem/ulefone.markdown
new file mode 100644
index 0000000..cadf0f8
--- /dev/null
+++ b/_oem/ulefone.markdown
@@ -0,0 +1,4 @@
+---
+layout: device
+oem: Ulefone
+---