Enable FEATURE_DEVICE_ADMIN for handheld devices

Bug: 9520957
Change-Id: I9c09dc726509db9e6d9ba4700255c74528b9f9fa
diff --git a/data/etc/handheld_core_hardware.xml b/data/etc/handheld_core_hardware.xml
index 290afc2..4a9f2dd 100644
--- a/data/etc/handheld_core_hardware.xml
+++ b/data/etc/handheld_core_hardware.xml
@@ -36,6 +36,8 @@
     <feature name="android.software.app_widgets" />
     <feature name="android.software.home_screen" />
     <feature name="android.software.input_methods" />
+    <!-- Feature to specify if the device supports adding device admins. -->
+    <feature name="android.software.device_admin" />
     <!-- devices with GPS must include android.hardware.location.gps.xml -->
     <!-- devices with an autofocus camera and/or flash must include either
          android.hardware.camera.autofocus.xml or