Add .gitupstream file

Change-Id: Ia02e6b58a25cc80365d643c965f7825febc24e61
diff --git a/.gitupstream b/.gitupstream
new file mode 100644
index 0000000..9a743e0
--- /dev/null
+++ b/.gitupstream
@@ -0,0 +1 @@
+https://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/thermal-engine