Add Nordic Semiconductor ASA as shared menuconfig copyright holder
Add Nordic Semiconductor ASA as shared menuconfig copyright holder

Largely paid work, and it's copied into Zephyr, so it was a request.

All other source files are still copyright me.

Nothing changes in practice. I went for shared copyright to make sure
the ISC license can never be changed.

ulfalizer/Kconfiglib,ulfalizer/Kconfiglib