Allow disable of refresh golden for more than 1 layer encoding.

The current logic was allowing for disabling golden refresh only
for two pass svc encoding. This change disables it as long as
more than 1 layer encoding is used (for example temporal layers under 1pass CBR).

Change-Id: I4dc5204a7ad365c821ec7963e93b59da82e1826b
Merge "Allow disable of refresh golden for more than 1 layer encoding."