Extend QCA roam event with subnet change indication

The new attribute can be used with
QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_ROAM_AUTH to indicate whether the IP
subnet was detected to have changed when processing offloaded roam/key
management.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/common/qca-vendor.h

@@ -210,6 +210,7 @@ enum qca_wlan_vendor_attr_roam_auth {
 	QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_KEY_REPLAY_CTR,
 	QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_PTK_KCK,
 	QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_PTK_KEK,
+	QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_SUBNET_STATUS,
 	/* keep last */
 	QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_AFTER_LAST,
 	QCA_WLAN_VENDOR_ATTR_ROAM_AUTH_MAX =