Add support for warp7, which is a board based on NXP i.MX7S processor.
More information about warp7 can be found at:
https://www.element14.com/community/docs/DOC-79058
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
