Make change and version bump to r_aml_300801300 for mainline module file: manifest.json

Change-Id: I1f08aa82fb5cb359392a5cb703575f9cacacb48f
diff --git a/manifest.json b/manifest.json
index ca61937..8ba2d4a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,4 +1,4 @@
 {
   "name": "com.android.sdkext",
-  "version": 300801200
+  "version": 300801300
 }