scripts: Add SoC and board devicetree generator scripts#23

Aksel Mellbye (asmellby) wants to merge 2 commits intoSiliconLabsSoftware:silabs/feature/dts-genSiliconLabsSoftware/hal_silabs:silabs/feature/dts-genfrom

asmellby:feature/series2-soc-dts-genasmellby/hal_silabs:feature/series2-soc-dts-genCopy head branch name to clipboard