ath6kl: make maximum number of vifs runtime configurable

Needed when detecting how many vifs firmware supports.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 7cf983b..5241929 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -357,7 +357,7 @@
 
 	if (type == NL80211_IFTYPE_STATION ||
 	    type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
-		for (i = 0; i < MAX_NUM_VIF; i++) {
+		for (i = 0; i < ar->vif_max; i++) {
 			if ((ar->avail_idx_map >> i) & BIT(0)) {
 				*if_idx = i;
 				return true;
@@ -367,7 +367,7 @@
 
 	if (type == NL80211_IFTYPE_P2P_CLIENT ||
 	    type == NL80211_IFTYPE_P2P_GO) {
-		for (i = ar->max_norm_iface; i < MAX_NUM_VIF; i++) {
+		for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
 			if ((ar->avail_idx_map >> i) & BIT(0)) {
 				*if_idx = i;
 				return true;
@@ -1306,7 +1306,7 @@
 	struct net_device *ndev;
 	u8 if_idx, nw_type;
 
-	if (ar->num_vif == MAX_NUM_VIF) {
+	if (ar->num_vif == ar->vif_max) {
 		ath6kl_err("Reached maximum number of supported vif\n");
 		return ERR_PTR(-EINVAL);
 	}
@@ -2459,6 +2459,8 @@
 	ar->wiphy = wiphy;
 	ar->dev = dev;
 
+	ar->vif_max = 1;
+
 	if (multi_norm_if_support)
 		ar->max_norm_iface = 2;
 	else