Swift radio in Hawkeye is a partial offload chipset supporting
11AC mode. It has no support for MLO. Currently, when MLO event
handler registration fails due to No Support, an error is returned.
This terminates the device bootup causing a crash.
To solve this issue, do not return an error status when the
event registration fails due to No support.
Change-Id: I89819461bbc1d0fa31ef0558c93d06723f13de35
CRs-Fixed: 3520749