arm: mvebu: turris_mox: Enable NVMe support
NVMe drives can be connected to Turris MOX via MOX B and MOX G
extensions.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>