reflect libbinder/am split

Minimizing cost for using libbinder.

Bug: 183654927
Test: boot
Change-Id: I1a4785a58afcaf2d312ef52a07f41fe3dd3a8fa6

core/java/android/app/IUidObserver.aidl

@@ -24,7 +24,7 @@ oneway interface IUidObserver {
     // below block of transactions.
 
     // Since these transactions are also called from native code, these must be kept in sync with
-    // the ones in frameworks/native/include/binder/IActivityManager.h
+    // the ones in frameworks/native/include_activitymanager/binder/IActivityManager.h
     // =============== Beginning of transactions used on native side as well ======================
 
     /**

native/android/Android.bp

@@ -77,6 +77,7 @@ cc_library_shared {
         "libgui",
         "libharfbuzz_ng",  // Only for including hb.h via minikin
         "libsensor",
+        "libactivitymanager_aidl",
         "libandroid_runtime",
         "libminikin",
         "libnetd_client",