frameworks/base: Support for LTE network modes

Change-Id: I93c102f92ff2d10856d91108bb50fe5c0f06ad66
Fix NullpointException problem in onMenuItemSelected

If both title and condensed title is null,
item.getTitleCondensed() could be return null value
in onMenuItemSelected. therefore need to check
whether retun value is null or not.

Change-Id: Ib08f52b949a794aa7bd6cc25414041e820f62969