qcacld-3.0: [11AX] Add dot11mode changes to support 11ax

Add new dot11mode and update the utility functions to derive
the dot11mode based on the userspace config, INI config and
FW capability.

Change-Id: I5780120ef7bc2b78fd596e937fe14a2c8ad88348
CRs-Fixed: 1073481

core/wma/inc/wma.h

@@ -1695,6 +1695,7 @@ struct wma_target_req {
  *			number of transmit streams
  * @preferred_rx_streams: policy manager indicates the preferred
  *			number of receive streams
+ * @he_capable: HE capability
  */
 struct wma_vdev_start_req {
 	uint32_t beacon_intval;
@@ -1719,6 +1720,7 @@ struct wma_vdev_start_req {
 	uint32_t preferred_tx_streams;
 	uint32_t preferred_rx_streams;
 	uint8_t beacon_tx_rate;
+	bool he_capable;
 };
 
 /**