bd9550b026
venus only needs to know if a WSI image is a prime blit source. In an upcoming swapchain image rework, the prime blit destination is unknown when the WSI image is created. Replace prime_blit_buffer by a bool. Signed-off-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12046>