Hardware Spinlocks (HWSPINLOCK)
Overview
An HWSPINLOCK device is a peripheral used to protect shared resources across clusters in the system. Each HWSPINLOCK instance is providing one or more spinlocks. The api is similar to regular zephyr spinlocks.
Because we also want to protect the spinlock resource to be used by multiple cores in the same cluster, each HWSPINLOCK device include a regular zephyr spinlock, and use it to lock the access to HWSPINLOCK hardware.