Tethering: add p2p regex for tethering modes

Bug: 147399354
Test: build
Change-Id: Iec666cc302ee749ddb57379f42f1e540ed813e48
diff --git a/Tethering/res/values/config.xml b/Tethering/res/values/config.xml
index ca290c6..d61f8e1 100644
--- a/Tethering/res/values/config.xml
+++ b/Tethering/res/values/config.xml
@@ -38,8 +38,9 @@
 
     <!-- List of regexpressions describing the interface (if any) that represent tetherable
          Wifi P2P interfaces.  If the device doesn't want to support tethering over Wifi P2p this
-         should be empty.  An example would be "p2p-p2p.*" -->
+         should be empty.  An example would be "p2p-p2p\\d-.*" -->
     <string-array translatable="false" name="config_tether_wifi_p2p_regexs">
+        <item>"p2p-p2p\\d-.*"</item>
     </string-array>
 
     <!-- List of regexpressions describing the interface (if any) that represent tetherable