Revert "accel/ethosu: Remove drm_sched_init_args->num_rqs usage"

Revert "accel/ethosu: Remove drm_sched_init_args->num_rqs usage"

This reverts commit 06879a9ad55bc4a7aa2e1bb7ee9fa658cdddee79.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Luke.Wildhardt@proton.me
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Philipp Stanner <phasta@kernel.org>
Cc: Christian König <ckoenig.leichtzumerken@gmail.com>
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Link: https://lore.kernel.org/r/20260811163139.99746-14-tvrtko.ursulin@igalia.com