panfrost: Update ctx->batch when a fresh batch is requested

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <!8808>
42 jobs for !8808 with panfrost-misc in 20 minutes and 29 seconds (queued for 3 seconds)
merge request