Make change and version bump to r_aml_300900400 for mainline module file: packages/Tethering/apex/manifest.json

Change-Id: I538efbc8e379b929f50ad1762bdf759ca31cdbb8
diff --git a/Tethering/apex/manifest.json b/Tethering/apex/manifest.json
index 94508a3..d747cc8 100644
--- a/Tethering/apex/manifest.json
+++ b/Tethering/apex/manifest.json
@@ -1,4 +1,4 @@
 {
   "name": "com.android.tethering",
-  "version": 300900300
+  "version": 300900400
 }