SAE: Add Finite Cyclic Group negotiation and Send-Confirm

This replaces the previously used bogus test data in SAE messages with
the first real field. The actual SAE authentication mechanism is still
missing and the Scaler, Element, and Confirm fields are not included.

Signed-hostap: Jouni Malinen <j@w1.fi>

src/ap/sta_info.h

@@ -126,6 +126,7 @@ struct sta_info {
 
 #ifdef CONFIG_SAE
 	enum { SAE_INIT, SAE_COMMIT, SAE_CONFIRM } sae_state;
+	u16 sae_send_confirm;
 #endif /* CONFIG_SAE */
 };