usb: gadget: Move USBNET_DEVADDR option out of g_dnl

The USBNET_DEVADDR has nothing to do with the USB download gadget, but
rather with the USB Ethernet gadget. Move it out of the if statement.

Acked-by: Łukasz Majewski <lukma@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

drivers/usb/gadget/Kconfig

@@ -119,10 +119,10 @@ config G_DNL_VENDOR_NUM
 config G_DNL_PRODUCT_NUM
 	hex "Product ID of USB device"
 
+endif # USB_GADGET_DOWNLOAD
+
 config USBNET_DEVADDR
 	string "USB Gadget Ethernet device mac address"
 	default "de:ad:be:ef:00:01"
 
-endif # USB_GADGET_DOWNLOAD
-
 endif # USB_GADGET