Add .gitupstream file

Change-Id: If0c66cc29595e8a06286bae53a7d6612fed7830a
diff --git a/.gitupstream b/.gitupstream
new file mode 100644
index 0000000..817eba4
--- /dev/null
+++ b/.gitupstream
@@ -0,0 +1 @@
+https://git.codelinaro.org/clo/la/platform/vendor/codeaurora/telephony