- Remove CONFIG_BOARD_EWS from defconfig (auto-generated in new Zephyr)
- Replace deprecated 'bus-speed' with 'bit-rate' properties for FDCAN
- Replace deprecated 'bus-speed-data' with 'bit-rate-data' properties
- Update board.yml to new Zephyr 4.2 format with 'board:' root key
- Add CONFIG_BOARD_EWS=y to defconfig
- Remove west workspace files (not needed in git)