Add .gitupstream file

Change-Id: Ibba4cd1627e22f5c7e5d9509fca4331c6faaceb1
diff --git a/.gitupstream b/.gitupstream
new file mode 100644
index 0000000..911f20b
--- /dev/null
+++ b/.gitupstream
@@ -0,0 +1 @@
+https://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/display-commonsys-intf