qcacld-3.0: Update tx params if 2.4G APs min supported rate is 6Mbps

In STA mode, tx params for auth and assoc req frame
are not updated if minrate is 1 or 6Mbps as these
are the default rates for 2.4G and 5G respectively.
If 2.4G APs min supported rate is 6Mbps, the tx params
are not updated which results in auth and assoc req
frame transmitted at 1Mbps.

Fix is to update tx params if minrate is 6Mbps and
AP is operating in 2.4G.

Change-Id: Ia12c7b13cfb93e2d3b5a4ae124003248fa109e3f
CRs-Fixed: 2205282
diff --git a/core/wma/inc/wma.h b/core/wma/inc/wma.h
index edacd7c..8d8cbdf 100644
--- a/core/wma/inc/wma.h
+++ b/core/wma/inc/wma.h
@@ -1058,6 +1058,7 @@
  * @vdev_start_wakelock: wakelock to protect vdev start op with firmware
  * @vdev_stop_wakelock: wakelock to protect vdev stop op with firmware
  * @vdev_set_key_wakelock: wakelock to protect vdev set key op with firmware
+ * @channel: channel
  */
 struct wma_txrx_node {
 	uint8_t addr[IEEE80211_ADDR_LEN];
@@ -1148,6 +1149,7 @@
 	qdf_wake_lock_t vdev_set_key_wakelock;
 	struct roam_synch_frame_ind roam_synch_frame_ind;
 	bool is_waiting_for_key;
+	uint8_t channel;
 };
 
 /**