qcacmn: Refactor qdf platform op start/stop

The original implementation intended to back the qdf_psoc_op_start/stop
callbacks has evolved somewhat since the qdf_psoc_op interface was
added. Refactor this interface to better reflect the evolved
implementation.

Change-Id: Ia18949fc75bdc52313bc81976f79d3a76e9760ec
CRs-Fixed: 2418426
2 files changed