FreeSync Support For RADV Vulkan Driver Blocked By Lack Of Config System

With the Linux 5.0 kernel the AMDGPU landed its support for FreeSync / Variable Rate Refresh support and that's already been joined by FreeSync/VRR support within Mesa's RadeonSI OpenGL driver. But FreeSync support for the RADV Radeon Vulkan driver has been delayed -- a merge request is now open but it's not expected to be merged at this point for a lack of a configuration management system...