Add edgetpu-api to Excelsior manifest

Change-Id: I282ef27537f53b9f61a55551067f672f21a79579
diff --git a/excelsior.xml b/excelsior.xml
index 130f3d5..ac9eb8f 100644
--- a/excelsior.xml
+++ b/excelsior.xml
@@ -61,6 +61,7 @@
       name="excelsior-mendel/packages/excelsior-wlan" />
     <project remote="excelsior" path="packages/excelsior-nvram"
       name="excelsior-mendel/packages/excelsior-nvram" />
+    <project path="packages/edgetpu-api" name="python-tflite-source" />
     <!-- END mtk packages repos -->
 
     <!-- END Excelsior specfic repos -->