qcacld-3.0: Replace typedef tWLAN_SAPEvent

The Linux Coding Style enumerates a few special cases where typedefs
are useful, but stresses "NEVER EVER use a typedef unless you can
clearly match one of those rules." The tWLAN_SAPEvent typedef does not
meet any of those criteria, so replace it (and the "pt" variant) with
a properly named struct.

Change-Id: Ie39e51a24a16f0c19b7b0fe926748a6b90d31632
CRs-Fixed: 2423729
4 files changed