Ettore Chimenti authored Jun 06, 2022 and Stevan Radaković committed Jun 09, 2022

In some configuration in SECO-B68 (using a USB drive or sata),
it can happen that boot devices do not show up. It needs 'rootwait'
to prevent panic.

Signed-off-by: Ettore Chimenti <ettore.chimenti@seco.com>