linuxkpi: Add spin_trylock_irqsave() macro
This is needed by the drm-kmod 5.6 update.
Reviewed by: hselasky
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D30706
linuxkpi: Add spin_trylock_irqsave() macro Tags None Referenced Files None Subscribers None
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