reflect libbinder/am split

(manual cherry-pick from AOSP to fix merge conflict)

Minimizing cost for using libbinder.

Bug: 183654927
Test: boot
Change-Id: I6b0182fcd6ae0db324bff63353bf493f85909137
diff --git a/services/mediatranscoding/tests/Android.bp b/services/mediatranscoding/tests/Android.bp
index 4df5a9f..cb180ec 100644
--- a/services/mediatranscoding/tests/Android.bp
+++ b/services/mediatranscoding/tests/Android.bp
@@ -25,6 +25,7 @@
     ],
 
     shared_libs: [
+        "libactivitymanager_aidl",
         "libbinder",
         "libbinder_ndk",
         "liblog",