[Bluetooth] Use R1 for default value of pscan_rep_mode

Most devices seem to use R1 for pscan_rep_mode to save power
consumption, so R1 is preferable for default value, if there
is no entry in the inquiry cache. Using R1 will improve the
average of connect time in many cases.

net/bluetooth/hci_conn.c

@@ -71,6 +71,7 @@ void hci_acl_connect(struct hci_conn *conn)
 
 	memset(&cp, 0, sizeof(cp));
 	bacpy(&cp.bdaddr, &conn->dst);
+	cp.pscan_rep_mode = 0x01;
 
 	if ((ie = inquiry_cache_lookup(hdev, &conn->dst)) &&
 			inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) {