Manta devices: Add managed provisioning mime type to the types that NFC recognizes during provisioning.

I've also edited the base file so that every device recognizes the managed provisioning mime type, we still need specific devices to recognize the nfcprovision mime type though and manta is one of them.

Change-Id: Ic03b1eec7b7d2554ef18d6877597b53e5b70c726
diff --git a/overlay/packages/apps/Nfc/res/values/provisioning.xml b/overlay/packages/apps/Nfc/res/values/provisioning.xml
index 1ca59e3..0508900 100644
--- a/overlay/packages/apps/Nfc/res/values/provisioning.xml
+++ b/overlay/packages/apps/Nfc/res/values/provisioning.xml
@@ -17,12 +17,11 @@
 <!-- NFC resources that may need to be customized
      for different hardware or product builds. -->
 <resources>
-    <!-- Whether the device can receive NFC data in setup wizard -->
-    <bool name="enable_nfc_provisioning">true</bool>
 
     <!-- The accepted mime-types when NFC is enabled in setup wizard.
          Mime-types must be lower case, wildcards are *not* accepted. -->
     <string-array name="provisioning_mime_types">
         <item>application/vnd.com.google.android.nfcprovision</item>
+        <item>application/com.android.managedprovisioning</item>
     </string-array>
 </resources>