Add .gitupstream file

Change-Id: I7a6033738effe83e619d462250fb919a948a83db
diff --git a/.gitupstream b/.gitupstream
new file mode 100644
index 0000000..88c9eb6
--- /dev/null
+++ b/.gitupstream
@@ -0,0 +1 @@
+https://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/audio-hal/st-hal