x3dSpotLight4 fails

[dnvasilev]

Some spotlights missing.
Broken:

Good:

[dnvasilev]

Does not occur on G935S (Korean) that is a very similar phone to G935F (Euro). Both are S7Edge with Mali.

[mwitchwilliams]

Issue previously posted at:
Samsung/GearVRf#1166

[dnvasilev]

The test has 19 spotlights
GVRF supports either 13 or 16 spotlights, depending on the phone model
GVRF ignores extra lights
Problem: GVRF selects different lights on different test runs

[mwitchwilliams]

There is a new spotlight test, spotlighttestThirteen.x3d, that has a 4 x 4 matrix of numbers 0 to 15 that helps identify which spot light do/don't turn on at:
https://github.com/gearvrf/GearVRf-Tests/pull/163/files

Based on testing, we have issues with not all 13 spotlights turning on and it seems random.