nl80211: Fix regression in P2P group interface removal

Commit 390e489c0d9415caf103367136eaa534b559837c extended hostapd BSS
interface removal capabilities. However, it ended up causing a
regression in wpa_supplicant P2P group interface handling. That P2P
group interface is removed through another driver_nl80211.c BSS context
and as such, the bss->added_if is not set. Fix this by verifying whether
the request is for another ifindex and if so, removing the interface
even if added_if is not marked.

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

src/drivers/driver_nl80211.c

@@ -9490,7 +9490,7 @@ static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
 
 	wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
 		   __func__, type, ifname, ifindex, bss->added_if);
-	if (ifindex > 0 && bss->added_if)
+	if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
 		nl80211_remove_iface(drv, ifindex);
 
 	if (type != WPA_IF_AP_BSS)