brcmfmac: fix uninitialized field in scheduled scan ssid configuration

The scheduled scan ssid configuration in firmware has a flags field that
was not initialized resulting in unexpected behaviour.

Fixes: e3bdb7cc0300 ("brcmfmac: fix handling ssids in .sched_scan_start() callback")
Reviewed-by: Hante Meuleman <[e-mail]>
Reviewed-by: Pieter-Paul Giesberts <[e-mail]>
Reviewed-by: Franky Lin <[e-mail]>
Signed-off-by: Arend van Spriel <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c

···
 	pfn.wpa_auth = cpu_to_le32(BRCMF_PNO_WPA_AUTH_ANY);
 	pfn.wsec = cpu_to_le32(0);
 	pfn.infra = cpu_to_le32(1);
+	pfn.flags = 0;
 	if (active)
 		pfn.flags = cpu_to_le32(1 << BRCMF_PNO_HIDDEN_BIT);
 	pfn.ssid.SSID_len = cpu_to_le32(ssid->ssid_len);