camera: Send proper preview window updates to HAL

During setPreviewWindow call camera_preview_window instance will
be passed to the HAL. camera_preview_window instance will never change when
ANativeWindow is updated. Hence HAL tries to use old preview window
handle not knowing that the preview window is updated. Added the
check in camera interface to reset the preview handle based on
whether ANativeWindow instance is changed or not.

CRs-Fixed: 341892
Change-Id: I6743f24cbd4467025d6fe21098c7ce6813017d5e

Frameworks: Allow CameraService to set window when preview is not running

Change-Id: Iab3f652ed3a7639c660e85c98a837215985a3296

 Camera: Enable metadata callback after snapshot

Change-Id: I734fc596b7549d4dcc00aee466e1c4be02e38c8d
CRs-fixed: 346728