SnapdragonCamera: notify focus manager about surface change

If device and preview have different aspect ratio, preview doesn't
occupy full screen. So SurfaceView's dimensions including margins
need to be considered for transformation matrix. Otherwise touch
focus area set to HAL won't match with actual user touch point on
screen.

CRs-Fixed: 885176
Change-Id: I6b7bfa6e3cb831592615dc5dfc45622f106c99d0
1 file changed