Fix licenses and license texts; add package names.

Found missing license texts from similar projects. Pointed all subdirs
at parent (either root or runtime/) to pick up licenses with package
names.

Test: m nothing
Change-Id: I4bc59be6ae1f266508fb7d9fca21aa28be320404
diff --git a/common/Android.bp b/common/Android.bp
index 6010093..1fd518d 100644
--- a/common/Android.bp
+++ b/common/Android.bp
@@ -15,7 +15,10 @@
  */
 
 package {
-    default_applicable_licenses: ["Android-Apache-2.0"],
+    // Inherits all licenses from parent to get Apache 2.0 and package name
+    default_applicable_licenses: [
+        "packages_modules_NeuralNetworks_license",
+    ],
 }
 
 cc_library_headers {