brcmfmac: remove unnecessary macro usage in brcmf_cfg80211_resume()

The macro wiphy_to_cfg() is a bit redundant as the function already
has a pointer variable to brcmf_cfg80211_info structure.

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

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

@@ -2997,7 +2997,7 @@ static s32 brcmf_cfg80211_resume(struct wiphy *wiphy)
 	WL_TRACE("Enter\n");
 
 	if (check_vif_up(ifp->vif))
-		brcmf_invoke_iscan(wiphy_to_cfg(wiphy));
+		brcmf_invoke_iscan(cfg);
 
 	WL_TRACE("Exit\n");
 	return 0;