tests: Make wifi_display enforce social channel as operating channel

Previously, this was assumed to be the case due to default channel
selection behavior. However, that may not be the case with driver-based
preference list processing. Enforce a social channel to be used as the
operating channel here since dev[2] uses social channel only device
discovery and needs to find the GO.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
1 file changed