boards: nxp: mimxrt1060_evk: Added support for IW612 and IW416 SoCs

- Added separate overlay conf files for wifi IW416 and IW612 SoCs.
- Added overlay debug conf file for nxp wifi needed to enable debug logs.
- Added additional configurations for module's region selection.

Signed-off-by: Abhinav Kulkarni <abhinav.kulkarni@nxp.com>