Camera: verify per-frame metadata when ALOGV is enabled

Validate_camera_metadata_structure need about 4% cpu on
cameraserver for each frame.
The verify in writeToParcel and acquire only print error logs.
So it's better to close the verify for normal user.

Test: Catch cpu usage and cat simpleperf of Camera APP
Bug：395005214

Change-Id: I509e54de26871c7928caa26cf2191d63c8c38634
Signed-off-by: wangxiaobin <wangxiaobin@xiaomi.corp-partner.google.com>