qcacmn: Add QCA_NL80211_VENDOR_SUBCMD_ROAM_STATS_INDEX

Add QCA_NL80211_VENDOR_SUBCMD_ROAM_STATS_INDEX.

when qca vendor cmd of QCA_NL80211_VENDOR_SUBCMD_ROAM_STATS get roam
information, driver send all the cached information to user space.

Change-Id: I5fa3202850eb21fe3fbf88ddbf51a803457a948e
CRs-Fixed: 3409607

os_if/linux/wlan_cfg80211.h

@@ -174,6 +174,7 @@
  *     event index
  * @QCA_NL80211_VENDOR_SUBCMD_AFC_EVENT_INDEX: AFC Event index
  * @QCA_NL80211_VENDOR_SUBCMD_DOZED_AP_INDEX: Dozed AP event index
+ * @QCA_NL80211_VENDOR_SUBCMD_ROAM_STATS_INDEX: Roam stats index index
  */
 
 enum qca_nl80211_vendor_subcmds_index {
@@ -296,6 +297,9 @@ enum qca_nl80211_vendor_subcmds_index {
 #ifdef WLAN_SUPPORT_GAP_LL_PS_MODE
 	QCA_NL80211_VENDOR_SUBCMD_DOZED_AP_INDEX,
 #endif
+#ifdef WLAN_FEATURE_ROAM_INFO_STATS
+	QCA_NL80211_VENDOR_SUBCMD_ROAM_STATS_INDEX,
+#endif
 };
 
 #if !defined(SUPPORT_WDEV_CFG80211_VENDOR_EVENT_ALLOC) && \