b6faf586e6
Currently vdpau driver and dri driver are two separate libraries, when radeonsi is enabled both libraries contain amdgpu winsys. radeonsi needs shared winsys to ensure sync between OpenGL and VDPAU works. Build vdpau driver into libgallium to avoid having two instances of amdgpu winsys. Cc: mesa-stable Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31079>