ath6kl: Fix 4-way handshake failure in AP and P2P GO mode

RSN capability field of RSN IE which is generated (which is what really
advertised in beacon/probe response) differs from the one generated in
wpa_supplicant. This inconsistency in rsn IE results in 4-way handshake
failure. To fix this, configure rsn capability used in wpa_supplicant
in firmware using a new wmi command, WMI_SET_IE_CMDID. There is a bit
(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE) in fw_capabilities to advertise
this support to driver.

Signed-off-by: Subramania Sharma <sharmat@qca.qualcomm.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/wmi.c

@@ -3221,6 +3221,29 @@ int ath6kl_wmi_set_appie_cmd(struct wmi *wmi, u8 if_idx, u8 mgmt_frm_type,
 				   NO_SYNC_WMIFLAG);
 }
 
+int ath6kl_wmi_set_ie_cmd(struct wmi *wmi, u8 if_idx, u8 ie_id, u8 ie_field,
+			  const u8 *ie_info, u8 ie_len)
+{
+	struct sk_buff *skb;
+	struct wmi_set_ie_cmd *p;
+
+	skb = ath6kl_wmi_get_new_buf(sizeof(*p) + ie_len);
+	if (!skb)
+		return -ENOMEM;
+
+	ath6kl_dbg(ATH6KL_DBG_WMI, "set_ie_cmd: ie_id=%u ie_ie_field=%u ie_len=%u\n",
+		   ie_id, ie_field, ie_len);
+	p = (struct wmi_set_ie_cmd *) skb->data;
+	p->ie_id = ie_id;
+	p->ie_field = ie_field;
+	p->ie_len = ie_len;
+	if (ie_info && ie_len > 0)
+		memcpy(p->ie_info, ie_info, ie_len);
+
+	return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_IE_CMDID,
+				   NO_SYNC_WMIFLAG);
+}
+
 int ath6kl_wmi_disable_11b_rates_cmd(struct wmi *wmi, bool disable)
 {
 	struct sk_buff *skb;