staging: wfx: merge wfx_stop_ap() with wfx_reset()

wfx_stop_ap() and wfx_reset() do the same thing. Merge them.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200515083325.378539-13-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/sta.c

@@ -479,11 +479,7 @@ void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 {
 	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
 
-	hif_reset(wvif, false);
-	wfx_tx_policy_init(wvif);
-	if (wvif_count(wvif->wdev) <= 1)
-		hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
-	wvif->bss_not_support_ps_poll = false;
+	wfx_reset(wvif);
 }
 
 static void wfx_join_finalize(struct wfx_vif *wvif,