amdgpu fixes for rpi5#6947

pepijndevos wants to merge 4 commits intoraspberrypi:rpi-6.12.yraspberrypi/linux:rpi-6.12.yfrom

pepijndevos:rpi-6.12.y-gpupepijndevos/linux:rpi-6.12.y-gpuCopy head branch name to clipboard