camera: Enable ZSL

Restarting preview if toggling ZSL fixes the stream errors on
switch, so we can enable this now

Change-Id: I07ceeed859ffa6dc4e75faed18209be83c21a043
g2: add camera resolution overlays

Change-Id: I5bdf7295c4808c82906c83384be3e562cb83e3ad
Overlay: adjust camera values a bit