Add vivo y51l

Change-Id: Icb71216c53cea9a4037dfbc78c57f98651dfc859
diff --git a/_oem/vivo.markdown b/_oem/vivo.markdown
new file mode 100644
index 0000000..f7d323b
--- /dev/null
+++ b/_oem/vivo.markdown
@@ -0,0 +1,4 @@
+---
+layout: device
+oem: Vivo
+---