Add Essential PH-1

Change-Id: Ida816198753317292a35c56eada1f84e2dfc491e
diff --git a/_oem/essential.markdown b/_oem/essential.markdown
new file mode 100644
index 0000000..0e0a88d
--- /dev/null
+++ b/_oem/essential.markdown
@@ -0,0 +1,4 @@
+---
+layout: device
+oem: Essential
+---