AON counter driver needs to add driver API reentrancy support

[zephyrbot]

Reported by Kuo-Lang Tseng:

Use locking mechanism to guard critical regions in the driver API so that the API operation from one thread (task or fiber) can complete without the context being over-written by simultaneous call of the API from other thread (task or fiber).

(Imported from Jira ZEP-424)

[zephyrbot]

by ethan gao:

Verified configuring AON counter concurrently in task/fiber/isr context