qcacld-3.0: Avoid OBSS scan fail during SSR

When SSR is in progress, OBSS vendor scan request is rejected with
reason code -EAGAIN, but hostapd doesn't consider this reason code
and resulting in the failure of hotspot start.

To fix this, return error code -EBUSY which makes hostapd to reissue
OBSS scan.

Change-Id: I71119f542011aebece5692347ceb99f4a65decef
CRs-Fixed: 2443341
1 file changed