If resume and fw wakeup happens at the same time.
psoc_ctx->lock maybe doing bottom half operation for resume,
then wakeup interrupt comes on same cpu, the interrupt
handler will also acquire psoc_ctx->lock in
pmo_core_update_wow_initial_wake_up, which cause dead lock.
Using atomic for wow_initial_wake_up, so the interrupt handler
can avoid using spin_lock.
Change-Id: Id0e963a0924415e9660c57a1c1b776d3e609213d
CRs-Fixed: 2624899
ad6337f2b0