imx6: Convert sabrelite and nitrogen6x boards to distro boot support

Boot tested on sabrelite board.

Signed-off-by: Guillaume GARDET <guillaume.gardet@free.fr>
Cc: Troy Kisky <troy.kisky@boundarydevices.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Gary Bisson <gary.bisson@boundarydevices.com>
Tested-by: Denis Pynkin <denis.pynkin@collabora.com>
1 file changed