arm64: dts: add NXP i.MX91 device tree

Add the i.MX91 device tree from [1]. These files could be synced
to linux upstream after [1] merged to linux source tree.

[1]
https://lore.kernel.org/all/20241120094945.3032663-1-pengfei.li_1@nxp.com/

Signed-off-by: Peng Fan <peng.fan@nxp.com>
3 files changed