Currently driver uses iface name to get netdev when it processes
ndp responder request. There is a possibility that framework does
not know the iface name when it sends the error response.
if driver does not receive iface name it fails to get the netdev
and fails to perform the dsc operation, because of which driver
drops the ndp responder request command.
To address this issue, use wdev to get netdev instead of iface name.
Change-Id: Idf394f4a22ace8757f947b2ef8e4a7d22e66d65e
CRs-Fixed: 3124009
db7441ab3f