Whitelist the Android dialer for managed devices

Some of these devices will be phones, which need to have some kind of
capability to make calls.

Bug: 20937422
Change-Id: Ia3089bf1235856e8fadc48787ef8cecc49295b4d
diff --git a/res/values/required_apps_managed_device.xml b/res/values/required_apps_managed_device.xml
index 1570c01..5ba9c4b 100644
--- a/res/values/required_apps_managed_device.xml
+++ b/res/values/required_apps_managed_device.xml
@@ -21,6 +21,7 @@
     <string-array name="required_apps_managed_device">
         <item>com.android.settings</item>
         <item>com.android.contacts</item>
+        <item>com.android.dialer</item>
         <item>com.android.providers.downloads</item>
         <item>com.android.providers.downloads.ui</item>
     </string-array>