Bump targetSdkVersion to 24

This will only affect AOSP build.

BUG:28621267
Change-Id: I445b68bca4372075ec876669c9a2a4177a0eaf40
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 505417e..a3da25c 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -19,7 +19,7 @@
 
     <original-package android:name="com.android.quicksearchbox" />
 
-    <uses-sdk android:minSdkVersion="8" />
+    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="24" />
 
     <uses-permission android:name="android.permission.GLOBAL_SEARCH" />