include: configs: am43xx_evm: add 'usb stop' in usbboot env

The usbboot environment variable has 'usb start' command but
doesn't have the corresponding 'usb stop' command. This breaks
usb peripheral mode if tried after 'run usbboot' fails to load
the images in usb host mode.

Fix it here by adding 'usb stop' command in usbboot env.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
1 file changed