Merge pull request #1217 from Unity-Technologies/expose-numlights-per-cluster

Expose numlights per cluster

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/LightLoop/LightLoop.cs

 
         int NumLightIndicesPerClusteredTile()
         {
-            return 8 * (1 << k_Log2NumClusters);       // total footprint for all layers of the tile (measured in light index entries)
+            return 32 * (1 << k_Log2NumClusters);       // total footprint for all layers of the tile (measured in light index entries)
         }
 
         public void AllocResolutionDependentBuffers(int width, int height, bool stereoEnabled)