Add @UnsupportedAppUsage annotations

For packages:
  android.renderscript

This is an automatically generated CL. See go/UnsupportedAppUsage
for more details.

Exempted-From-Owner-Approval: Mechanical changes to the codebase
which have been approved by Android API council and announced on
android-eng@

Bug: 110868826
Test: m
Change-Id: I016f6e720e79c48afe44f4690b5dd99fc81ae780
Merged-In: I1aa8ebca448547031b426a7b305c5c3d6fcf2652

rs/java/android/renderscript/Script.java

@@ -16,6 +16,7 @@
 
 package android.renderscript;
 
+import android.annotation.UnsupportedAppUsage;
 import android.util.SparseArray;
 
 /**
@@ -475,8 +476,10 @@ public class Script extends BaseObj {
      *
      */
     public static class Builder {
+        @UnsupportedAppUsage
         RenderScript mRS;
 
+        @UnsupportedAppUsage
         Builder(RenderScript rs) {
             mRS = rs;
         }