Blender Git Loki

Eevee: SSS: Principled Shader: Add a workaround the lack of scale input

This is a hack to make the user control the SSS radius even though the profile is baked with the default radius values.

This is completly against UI principles since you cannot edit the profile radiuses while there is something plugged into the radius socket.
Better solution will be to either have a dedicated node value for RGB radiuses and a SSS scale socket only for eevee.