Only set preview size before starting preview

Only set preview size before starting preview

Remove recursive call to startPreview when updating preview size.
Avoid invoking preview size parameter updates for all calls to
updateCameraParametersPreference, and only adjust preview size
immediately before starting preview. Also added info logging
for all call paths into startPreview() to better diagnose
sequence of events in logs if we still see any races or
ordering issues.

Bug: 17809876
Change-Id: I626c913bb154c54aaffb451c24a63c6750553a52
(cherry picked from commit 19597371a18921bb03337e4fa24c28dd2d8f06ed)