panfrost: Drop panfrost_vt_emit_shared_memory

Let's reuse the same routines across Midgard/Bifrost so we get proper
handling of spilling.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7206>
5 files changed