dts: arm: nxp: add dts files for RT1180

The offset of the peripheral is abstracted so that
the peripheral can be defined in RT118x.dtsi,that
is a common dtsi file for RT1180.

Due to cm33 core, add ns/s files which are served
on different status for cm33 core.

Add rt118x_cm7 dtsi file

Signed-off-by: Lucien Zhao <lucien.zhao@nxp.com>