Revert "Remove deprecated unenforced permission from manifest." and replace it with a valid current permission.

This reverts commit d79f91f74373cbad42cca1c36725c4b99486ddd8.

Reason for revert: Permission is required; using a current replacement instead of removing.

Change-Id: I9dd9b9912912faf42e6d5f720549a65b29f2965f
Test: STK usecase verified by partner
Bug: 159264561
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 3ac91ec..063e042 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -23,6 +23,7 @@
     <original-package android:name="com.android.stk" />
 
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.REAL_GET_TASKS"/>
     <uses-permission android:name="android.permission.RECEIVE_STK_COMMANDS" />
     <uses-permission android:name="android.permission.SET_ACTIVITY_WATCHER" />
     <uses-permission android:name="android.permission.START_ACTIVITIES_FROM_BACKGROUND" />