Limit FDN Number up to 40 digits for Vodafone

1.Dialer-Settings-Calling accounts-sim card select-Fixed dialing numbers
2.Click FDN list,add fdn number
3.Limit FDN Number up to 40 digits for Vodafone

bug: 140606221
Change-Id: Iafe1bace30a37fcf54bbebf6af4a61f36cc1a8af
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 7dae45d..689e239 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -977,7 +977,7 @@
     <!-- FDN settings: error message displayed in a popup (toast) -->
     <string name="pin2_invalid">FDN wasn\'t updated because you typed an incorrect PIN.</string>
     <!-- FDN settings: error message displayed in a popup (toast) -->
-    <string name="fdn_invalid_number">FDN wasn\'t updated because the number exceeds 20 digits.</string>
+    <string name="fdn_invalid_number">FDN wasn\'t updated because the number exceeds <xliff:g id="FDN_NUMBER_LIMIT_LENGTH">%d</xliff:g> digits.</string>
     <!-- FDN settings: error message displayed in a popup (toast), when the entered
          FDN number was inappropriate, OR, PIN2 the user entered was incorrect.
          Because of API restriction, there's no way to determine which is the exact