os_if_cstats_log_nan_disc_enable_req_evt is defined but not called when there is a NAN discovery enable event, this resulted in missing of NAN discovery enable stats in the chipset stats Fix this by calling os_if_cstats_log_nan_disc_enable_req_evt when there is a NAN discovery enable event Change-Id: Ic9610e01fb0449c5233d6e651c42d395cb1f21c5 CRs-Fixed: 3804972