wlcore: define number of supported bands internally

Avoid using the IEEE80211_NUM_BANDS constant for arrays sizes etc, as
this can contain bands unsupported by the driver (e.g. 60Ghz). Use an
internal constant to determine the number of bands.
Signed-off-by: Arik Nemtsov <arik@wizery.com>

drivers/net/wireless/ti/wlcore/main.c

@@ -4569,7 +4569,7 @@ static int wl12xx_set_bitrate_mask(struct ieee80211_hw *hw,
 
 	mutex_lock(&wl->mutex);
 
-	for (i = 0; i < IEEE80211_NUM_BANDS; i++)
+	for (i = 0; i < WLCORE_NUM_BANDS; i++)
 		wlvif->bitrate_masks[i] =
 			wl1271_tx_enabled_rates_get(wl,
 						    mask->control[i].legacy,

drivers/net/wireless/ti/wlcore/wlcore.h

@@ -304,7 +304,7 @@ struct wl1271 {
 	s8 noise;
 
 	/* bands supported by this instance of wl12xx */
-	struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
+	struct ieee80211_supported_band bands[WLCORE_NUM_BANDS];
 
 	/*
 	 * wowlan trigger was configured during suspend.
@@ -371,7 +371,7 @@ struct wl1271 {
 	u8 hw_min_ht_rate;
 
 	/* HW HT (11n) capabilities */
-	struct ieee80211_sta_ht_cap ht_cap[IEEE80211_NUM_BANDS];
+	struct ieee80211_sta_ht_cap ht_cap[WLCORE_NUM_BANDS];
 
 	/* size of the private FW status data */
 	size_t fw_status_priv_len;

drivers/net/wireless/ti/wlcore/wlcore_i.h

@@ -62,6 +62,9 @@
 #define WL12XX_INVALID_ROLE_ID     0xff
 #define WL12XX_INVALID_LINK_ID     0xff
 
+/* the driver supports the 2.4Ghz and 5Ghz bands */
+#define WLCORE_NUM_BANDS           2
+
 #define WL12XX_MAX_RATE_POLICIES 16
 
 /* Defined by FW as 0. Will not be freed or allocated. */
@@ -360,7 +363,7 @@ struct wl12xx_vif {
 	int channel;
 	enum nl80211_channel_type channel_type;
 
-	u32 bitrate_masks[IEEE80211_NUM_BANDS];
+	u32 bitrate_masks[WLCORE_NUM_BANDS];
 	u32 basic_rate_set;
 
 	/*