Rename board from ews_board to ews and fix board discovery

- Rename board directory: ews_board -> ews
- Rename board files: ews_board.dts -> ews.dts, ews_board_defconfig -> ews_defconfig
- Update board identifier and compatible strings
- Add board.cmake for runner configuration
- Set BOARD_ROOT in CMakeLists.txt to enable custom board discovery
- Update all documentation with new board name: west build -b ews

firmware/canfd_cdc_composite/boards/arm/ews/board.cmake

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: Apache-2.0
+
+if(CONFIG_BOARD_EWS)
+  board_runner_args(jlink "--device=STM32G0B1KB" "--speed=4000")
+  board_runner_args(pyocd "--target=stm32g0b1kbux")
+  
+  include(${ZEPHYR_BASE}/boards/common/pyocd.board.cmake)
+  include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
+  include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
+endif()

firmware/canfd_cdc_composite/boards/arm/ews/board.yml

@@ -1,4 +1,4 @@
-identifier: ews_board
+identifier: ews
 name: EWS Board
 type: mcu
 arch: arm

firmware/canfd_cdc_composite/boards/arm/ews/doc/index.rst

@@ -43,5 +43,5 @@ The board supports programming via:
 ## Building Firmware
 
 ```bash
-west build -b ews_board
+west build -b ews
 ```

firmware/canfd_cdc_composite/boards/arm/ews/ews.dts

@@ -4,7 +4,7 @@
 
 / {
 	model = "EWS Board STM32G0B1KBU6";
-	compatible = "ews,ews-board";
+	compatible = "ews,ews";
 
 	chosen {
 		zephyr,console = &cdc_acm_uart0;