SnapdragonCamera: Fix circles not drawn first time switch to camcoder

OnDraw method can't be triggered by invalidate(), so set LayoutParams
of the faceview to request a layout, and then OnDraw method will work when
invalidate() is called.

Change-Id: I7407700befad925e73ca8ce9eaa01fc7d3de1ab0
CRs-Fixed: 1043599
2 files changed