brcmfmac: Report the support of firmware roaming

Currently firmware roaming support is not reported to cfg80211.
This patch reports the support of firmware based roaming when
it is enabled.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Signed-off-by: Daniel Kim <dekim@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c

@@ -4364,6 +4364,8 @@ static struct wiphy *brcmf_setup_wiphy(struct device *phydev)
 			WIPHY_FLAG_OFFCHAN_TX |
 			WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
 			WIPHY_FLAG_SUPPORTS_TDLS;
+	if (!brcmf_roamoff)
+		wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM;
 	wiphy->mgmt_stypes = brcmf_txrx_stypes;
 	wiphy->max_remain_on_channel_duration = 5000;
 	brcmf_wiphy_pno_params(wiphy);