Delay clearing face data while stopping face detection.

In case of zsl mode face detection last callback is received
in 40 to 50ms after calling stop face detection on camera
device. This may be because of multi channel operation in zsl.
Because of this behavior though camera application clears the
UI immediately after stop face detection, invalid circles
remain on screen. This fix delays clearing of face circles
by 100ms.

Change-Id: I1ca10e82fff038ba720910a4cf022876dca050e1
Crs-Fixed: 566252
1 file changed