Settings: Correctly align cursor in Settings

Steps to Reproduce:
- Click on Density Settings (DPI Settings) / Renaming BT Device / Renaming SIM Settings
- EditText Dialog pops up
- The cursor is at the leftmost side of the text
- Logically Cursor should be at rightmost side which can be aligned grabbing text length

Screenshots:
Before:
http://imgur.com/a/o4vkr
http://imgur.com/a/6Qext

After:
http://imgur.com/a/fuxqT
http://imgur.com/a/vm2WX

Bug: 65185652
Test: RunSettingsRoboTests: OK (47 tests)

Change-Id: Id00308e7e019434edad4afab56cf4719be0d0d54
Signed-off-by: PMS22 <prathams99@rediff.com>

src/com/android/settings/Utils.java

@@ -103,6 +103,7 @@ import android.view.ViewGroup;
 import android.view.animation.Animation;
 import android.view.animation.Animation.AnimationListener;
 import android.view.animation.AnimationUtils;
+import android.widget.EditText;
 import android.widget.ListView;
 import android.widget.TabWidget;
 
@@ -1362,4 +1363,7 @@ public final class Utils extends com.android.settingslib.Utils {
                 && volume.isMountedReadable();
     }
 
+    public static void setEditTextCursorPosition(EditText editText) {
+        editText.setSelection(editText.getText().length());
+    }
 }