[Silabs] updated GNI for B0 2.0 board#29055

Merged

mergify[bot] merged 3 commits intoproject-chip:masterfrom silabs-srishylam:wifi_917soc_2.0_common_flash

Sep 14, 2023

+18-10

Commits on Sep 8, 2023

Commits on Sep 12, 2023

moved board defines to SiWx917_sdk.gni
silabs-srishylam
committed