ServiceState: add support for DCHSPAP

Change-Id: Ib0a328652c14580718400b00146b770481be5458
framework:Thread synchronization for UI update

Issue : Framework reboot was observed due to out of sync between
        two threads which inturn causes Null pointer exception
        while updating airplanemode.
Fix : Handled Null pointer exception and the crash is not observed.
CRs-Fixed: 570122

Change-Id: I2e969f6e7726ffcf8648b366ebb54cb2b0afc292
Enable stencil clipping within clearLayerRegions

Previously stencil clipping within clearLayerRegions is disabled by commit
62d307c2402777d5e53b4590af5f32f8c55afd81. However, clearing whole layer
regions causes black-colored triangle regions when a TextView has
RotateAnimation because the draw within clearLayerRegions does not
affected by the current stencil clip.

Change-Id: Id32a0b16754b109905f833e063ebfa156bd953f2
Signed-off-by: Dohyun Lee <dohyun.lee@lge.com>