RADV Driver Adds CI Coverage For Aging Radeon R9 290 "Hawaii" GPUs

While AMD hasn't released an updated Windows driver for the Radeon R9 290 "Hawaii" GPUs since 2022 for Windows 10, over in the Linux/open-source space the driver support continues. It will hopefully continue reliably too now that the Mesa RADV continuous integration (CI) has added driver testing with an old Hawaii GPU...