Change toast in automatic network selection

Display a different toast if choose network automatically
option is selected when device is already in auto selection mode

Change-Id: Ic85827cf4e6d3f622932173b7344cc1c3ba8921c
Bug-Id: 37200906
Test: Manual
diff --git a/res/values/strings.xml b/res/values/strings.xml
index ba9a083..c766e47 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -377,6 +377,8 @@
     <string name="connect_later">Can\'t connect to this network right now. Try again later.</string>
     <!-- Available networks screen, toast when registered on a specific network -->
     <string name="registration_done">Registered on network.</string>
+    <!-- Available networks, toast when user selects automatic selection  -->
+    <string name="already_auto">Already in automatic selection.</string>
     <!-- Available networks screen, name of switch button for whether to select network automatically -->
     <string name="select_automatically">Automatically select network</string>
     <!-- Available networks screen, name of button when user wants to select network manually  -->