ARM: multi_v7_defconfig: update ONBOARD_USB_HUB to ONBOAD_USB_DEV

ARM: multi_v7_defconfig: update ONBOARD_USB_HUB to ONBOAD_USB_DEV

The onboard_usb_hub driver has been updated to support non-hub devices,
which has led to some renaming. Update to the new name accordingly.

Update to the new name (ONBOARD_USB_DEV) accordingly.

Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Link: https://lore.kernel.org/r/20240325-onboard_xvf3500-v8-5-29e3f9222922@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>