Fix devicetree binding examples for the Generic Memory Interface (GMI)
bus driver found on Tegra SOCs.

While at it also remove double new lines as a left over from Rob's
commit 4da722ca ("dt-bindings: Remove "status" from examples").

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>