CI: Enable d3d12 driver for Linux GCC/clang builds
This MR adds the DirectX-Headers
dependency into the x86 container image, and adds the d3d12
driver to the list of gallium drivers for meson-release, meson-gallium, and meson-clang jobs.
This MR adds the DirectX-Headers
dependency into the x86 container image, and adds the d3d12
driver to the list of gallium drivers for meson-release, meson-gallium, and meson-clang jobs.