The log output will be too verbose when the following scenario
is hit:
1) hostapd is started on chan 149 with cc=US
2) ref-sta connects to sap
3) ping -i 0.01 to ref-sta from dut
4) set cc=JP on dut
and the verbose log output will result in a wlan scheduler
watchdog bite on some platforms.
Use rate limited versions of log outputting api to avoid the
instabilities brought by this.
Change-Id: Id87d81070334aab145bae6909857fd5d2851008a
CRs-Fixed: 2868738
abdd65099c