boards: adaftuit feather nrf52840 Kconfig updates

Remove unnecessary Kconfig options.
Simplify configuration by removing custom Kconfig option.
Make Kconfig generic for all boards by moving usb selection to
board_defconfig.

These changes should enable the boards to become variants instead.

Signed-off-by: Jacob Winther <[email protected]>

Author: jacobw

boards/adafruit/feather_nrf52840/Kconfig

@@ -9,46 +9,4 @@ if (BOARD_ADAFRUIT_FEATHER_NRF52840_EXPRESS || BOARD_ADAFRUIT_FEATHER_NRF52840_S
 config BT_CTLR
 	default BT
 
-if BOARD_SERIAL_BACKEND_CDC_ACM
-
-config USB_DEVICE_STACK
-	default y
-
-config USB_CDC_ACM
-	default SERIAL
-
-config UART_CONSOLE
-	default CONSOLE
-
-config USB_DEVICE_INITIALIZE_AT_BOOT
-	default y if CONSOLE
-
-config SHELL_BACKEND_SERIAL_CHECK_DTR
-	default SHELL
-	depends on UART_LINE_CTRL
-
-config UART_LINE_CTRL
-	default SHELL
-
-config USB_DEVICE_REMOTE_WAKEUP
-	default n
-
-if LOG
-
-# Logger cannot use itself to log
-config USB_CDC_ACM_LOG_LEVEL
-	default 0
-
-# Set USB log level to error only
-config USB_DEVICE_LOG_LEVEL
-	default 1
-
-# Wait 1500ms at startup for logging
-config LOG_PROCESS_THREAD_STARTUP_DELAY_MS
-	default 1500
-
-endif # LOG
-
-endif # BOARD_SERIAL_BACKEND_CDC_ACM
-
 endif # BOARD_ADAFRUIT_FEATHER_NRF52840_EXPRESS || BOARD_ADAFRUIT_FEATHER_NRF52840_SENSE

boards/adafruit/feather_nrf52840/Kconfig.defconfig

@@ -3,19 +3,25 @@
 # Enable MPU
 CONFIG_ARM_MPU=y
 
-# enable GPIO
+# Enable GPIO
 CONFIG_GPIO=y
 
-# enable uart driver
+# Enable UART driver
 CONFIG_SERIAL=y
 
-# enable console
+# Enable console
 CONFIG_CONSOLE=y
 CONFIG_UART_CONSOLE=y
 
 # 32kHz clock source
 CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
 CONFIG_CLOCK_CONTROL_NRF_K32SRC_500PPM=y
 
+# Logger cannot use itself to log
+CONFIG_USB_CDC_ACM_LOG_LEVEL_OFF=y
+
+# Enable USB
+CONFIG_USB_DEVICE_STACK=y
+
 # Build UF2 by default, supported by the Adafruit nRF52 Bootloader
 CONFIG_BUILD_OUTPUT_UF2=y