arm64: dts: freescale: Add i.MX93 dtsi support

The i.MX 93 applications processors are the first in the i.MX portfolio
to integrate the scalable Arm Cortex-A55 core, bringing performance
and energy efficiency to Linux-based edge applications and the
Arm Ethos-U65 microNPU, enabling developers to create more capable,
cost-effective and energy-efficient ML applications.

Add the basic dtsi support for i.MX93.

Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>