Add a flag to create renderengine for video use

Media uses renderengine to do HDR to SDR tone mapping
for thumbnail extraction. It only needs a few shaders.
Currently primeCache primes many shaders but none of
the ones media uses.

Add a flag to only prime the HDR->SDR shaders with
the settings that matches media usage.

bug: 135717526
bug: 140894732

Change-Id: I89b488d7c53351b13414adf71af28efd3232ecc6