qcacld-3.0: Use pointer assignment instead of struct

We need to disable any channel that does not have 20 MHz
bandwidth flag set. Use pointer assignment to accesss wiphy.
Local copy does not work.

CRs-Fixed: 1087967
Change-Id: Ia3b783046d0f08ebb039ef808e1add1dd8fd5fde
diff --git a/core/hdd/src/wlan_hdd_regulatory.c b/core/hdd/src/wlan_hdd_regulatory.c
index daea66d..86850c6 100644
--- a/core/hdd/src/wlan_hdd_regulatory.c
+++ b/core/hdd/src/wlan_hdd_regulatory.c
@@ -227,7 +227,7 @@
 {
 	const struct ieee80211_regdomain *reg_rules;
 	int chan_num;
-	struct ieee80211_channel chan;
+	struct ieee80211_channel *chan;
 
 	if (hdd_is_world_regdomain(reg->reg_domain)) {
 		reg_rules = hdd_get_world_regrules(reg);
@@ -252,9 +252,9 @@
 	for (chan_num = 0;
 	     chan_num < wiphy->bands[IEEE80211_BAND_2GHZ]->n_channels;
 	     chan_num++) {
-		chan = wiphy->bands[IEEE80211_BAND_2GHZ]->channels[chan_num];
-		if (chan.flags & IEEE80211_CHAN_NO_20MHZ)
-			chan.flags |= IEEE80211_CHAN_DISABLED;
+		chan = &(wiphy->bands[IEEE80211_BAND_2GHZ]->channels[chan_num]);
+		if (chan->flags & IEEE80211_CHAN_NO_20MHZ)
+			chan->flags |= IEEE80211_CHAN_DISABLED;
 	}
 
 	/*