qcacmn: Add feature capability support for ll_lt_sap

Currently there is no feature capability support for ll_lt_sap
and host driver and user space assumes that support for ll_lt_sap
is always present which not always true.
This may result in unexpected behavior if firmware does not
support ll_lt_sap.
To address this issue, add a feature capability to indicate
to userspace if host driver and firmware supports ll_lt_sap.

Change-Id: I4a2cc4fdb3d48469a5b1a4be32a4e760543b16cb
CRs-Fixed: 3520969

os_if/linux/qca_vendor.h

@@ -4638,6 +4638,8 @@ enum qca_wlan_vendor_attr_nd_offload {
  * @QCA_WLAN_VENDOR_FEATURE_AP_ALLOWED_FREQ_LIST: Flag indicates that the device
  *	in AP mode supports configuring allowed frequency list for AP operation
  *	with %QCA_WLAN_VENDOR_ATTR_CONFIG_AP_ALLOWED_FREQ_LIST.
+ * @QCA_WLAN_VENDOR_FEATURE_ENHANCED_AUDIO_EXPERIENCE_OVER_WLAN: Flag indicates
+ *	 that the device supports enhanced audio experience over WLAN feature.
  * @NUM_QCA_WLAN_VENDOR_FEATURES: Number of assigned feature bits
  */
 enum qca_wlan_vendor_features {
@@ -4664,6 +4666,7 @@ enum qca_wlan_vendor_features {
 	QCA_WLAN_VENDOR_FEATURE_PROT_RANGE_NEGO_AND_MEASURE_STA = 20,
 	QCA_WLAN_VENDOR_FEATURE_PROT_RANGE_NEGO_AND_MEASURE_AP = 21,
 	QCA_WLAN_VENDOR_FEATURE_AP_ALLOWED_FREQ_LIST = 22,
+	QCA_WLAN_VENDOR_FEATURE_ENHANCED_AUDIO_EXPERIENCE_OVER_WLAN = 23,
 	NUM_QCA_WLAN_VENDOR_FEATURES /* keep last */
 };