linux-yocto-rt/5.10: update to -rt56

Integrating the following commit(s) to linux-yocto-rt/5.10:

23f3ad608bc7 rcutorture: fixup merge from standard/base -stable
8612be3f3e2b Revert "rcutorture: Avoid problematic critical section nesting on RT"
9a6fb5667ac8 Linux 5.10.78-rt56
78c80dca8b1f irq_work: Also rcuwait for !IRQ_WORK_HARD_IRQ on PREEMPT_RT
e91d3b98e3b3 irq_work: Handle some irq_work in a per-CPU thread on PREEMPT_RT
bded6a156d4e irq_work: Allow irq_work_sync() to sleep if irq_work() no IRQ support.
747c881d3348 drm/i915/gt: Queue and wait for the irq_work item.
fa4ef0011e58 locking: Drop might_resched() from might_sleep_no_state_check()
f44d86bc5923 fscache: Use only one fscache_object_cong_wait.
2da5bc42a911 fscache: Use only one fscache_object_cong_wait.
53ecacfc9c68 mm: Disable NUMA_BALANCING_DEFAULT_ENABLED and TRANSPARENT_HUGEPAGE on PREEMPT_RT
03bdef3c5563 preempt: Move preempt_enable_no_resched() to the RT block
0def39751031 sched: Switch wait_task_inactive to HRTIMER_MODE_REL_HARD
60df07c6bd86 sched: Fix get_push_task() vs migrate_disable()
27f8594efeac mm, zsmalloc: Convert zsmalloc_handle.lock to spinlock_t
3fcbcd86a8eb Linux 5.10.78-rt55

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 29f8c47f)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>