Bluetooth: hci_sync: Fix not able to set force_static_address

force_static_address shall be writable while hdev is initing but is not
considered powered yet since the static address is written only when
powered.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Tested-by: Brian Gix <brian.gix@intel.com>

net/bluetooth/hci_debugfs.c

@@ -757,7 +757,7 @@ static ssize_t force_static_address_write(struct file *file,
 	bool enable;
 	int err;
 
-	if (test_bit(HCI_UP, &hdev->flags))
+	if (hdev_is_powered(hdev))
 		return -EBUSY;
 
 	err = kstrtobool_from_user(user_buf, count, &enable);