drm/panfrost: Don't sync rpm suspension after mmu flushing

stable inclusion
from stable-v5.10.176
commit a3c502218cd34992dabbfe0b5385a2ece5864f82
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I87BGI

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a3c502218cd34992dabbfe0b5385a2ece5864f82



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[ Upstream commit ba3be66f ]

Lockdep warns about potential circular locking dependency of devfreq
with the fs_reclaim caused by immediate device suspension when mapping is
released by shrinker. Fix it by doing the suspension asynchronously.

Reviewed-by: Steven Price <steven.price@arm.com>
Fixes: ec7eba47 ("drm/panfrost: Rework page table flushing and runtime PM interaction")
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://lore.kernel.org/all/20230108210445.3948344-3-dmitry.osipenko@collabora.com/


Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>