Correct SPL use of USB_FUNCTION_FASTBOOT

This converts 1 usage of this option to the non-SPL form, since there is
no SPL_USB_FUNCTION_FASTBOOT defined in Kconfig

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
1 file changed