lavapipe: Implement VK_EXT_fragment_shader_interlock

This is a noop implementation because it is not possible for multiple
threads to access the same pixel during rasterization since it is
tiled.

Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33628>
2 files changed