drm/panthor: assign unique names to queues

drm/panthor: assign unique names to queues

Userspace relies on the ring field of gpu_scheduler tracepoints to
identify a drm_gpu_scheduler.  The value of the ring field is taken from
sched->name.

Because we typically have multiple schedulers running in parallel in
each process, assign unique names to schedulers such that userspace can
distinguish them.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250902200624.428175-1-olvaffe@gmail.com