fb: Add Wifi name to notification drawer when Wifi is connected

compared to 4.3 we do not make this optional any more. If it is connected
it will show up in the notification drawer permanently and behaves same
like the carrier label

Change-Id: I058b6de4e546b4fa9b9cfef6c765664e135de2e2
hwui: Don't discard framebuffer on exynos4

The layers gets empty/not cleaned and redrawn on top of the preview,
causing beautiful glitch on homescreen, and drawing black instead
of transparency.

Change-Id: I633b104224c73c625f1193ee3dde41823cddc5bf
Telephony: fix typo

Change-Id: Ic13235744fca561cff4d49ae5c799420c30a3840