overlay:Camera2: add option to prevent autofocus cancel if preview stopped

There are camera HALs which cannot handle the autofocus cancel call if
the preview stopped in startPreview(). Add an option for this HAL's to
do not cancel autofocus in this cases.
pyramid:av: Update media_profiles
Merge https://github.com/ivanich/android_device_htc_pyramid into liquidsmooth-kk