e9c3dbd046 added PIPE_BIND_DRI_PRIME but it was only set when
importing a prime buffer.
This commit adds handling of this flag in the other codepath = the
one where the prime buffer is allocated by the render GPU.
With this change PIPE_BIND_DRI_PRIME is still only set for the
render GPU - the display GPU will never see this flag; a future
commit will rename it.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14615>
42c149e36b