panfrost: Move the batch stack size adjustment out of panfrost_queue_draw()

panfrost: Move the batch stack size adjustment out of panfrost_queue_draw()

That's part of our attempt to sanitize panfrost_queue_draw(),
panfrost_draw_vbo() and panfrost_emit_for_draw(). The new
panfrost_batch_adjust_stack_size() helper is placed in pan_job.c, where
all batch related functions live.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4083>