Prime cache for tone mappers in mediaserver

Instantiate media side renderengine when mediaserver
starts, and prime shader cache for the tone mapper
shaders only.

bug: 140894732
bug: 135717526

test: manually check that shader should be compiled
already when test run for first time

Change-Id: Ib02569bec948838ace0f3162206dbbcadad5b641
2 files changed