framework-statsd: Add missing permitted package

A bug in Soong prevented the permitted package check from being
performed. Fixing the bug revealed that there was a missing package
on framework-statsd which this change adds.

Test: m framework-statsd
Bug: 157633658
Change-Id: Ic0602b9c4a65b57c1ee87ba2fcfaf82c2606e640
diff --git a/apex/framework/Android.bp b/apex/framework/Android.bp
index 9f5d933..2d78995 100644
--- a/apex/framework/Android.bp
+++ b/apex/framework/Android.bp
@@ -60,6 +60,8 @@
         "android.app",
         "android.os",
         "android.util",
+        // From :statslog-statsd-java-gen
+        "com.android.internal.util",
     ],
 
     plugins: ["java_api_finder"],