AMD GPU Driver Sees DC Idle Manager & Multi-SDMA Engine Optimization For Linux 7.1

With Linux 7.0-rc6 having released on Sunday, we are hitting the point of the cut-off of new feature material being allowed into the Direct Rendering Manager's DRM-Next tree of queuing new graphics/display/accelerator feature code ahead of the upcoming Linux 7.1 merge window. As presumably the last AMDGPU/AMDKFD feature pull ahead of Linux 7.1, today's pull request from AMD contains some noteworthy final enhancements...