boards: custom_plank: tweak defconfig with UART console

To improve the default user experience. However, explain this may not be
the best choice on production boards.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>

Author: gmarull

app/debug.conf

@@ -7,13 +7,6 @@
 # compiler
 CONFIG_DEBUG_OPTIMIZATIONS=y
 
-# console
-CONFIG_CONSOLE=y
-
-# UART console
-CONFIG_SERIAL=y
-CONFIG_UART_CONSOLE=y
-
 # logging
 CONFIG_LOG=y
 CONFIG_APP_LOG_LEVEL_DBG=y

boards/vendor/custom_plank/custom_plank_defconfig

@@ -4,6 +4,12 @@
 CONFIG_ARM_MPU=y
 CONFIG_HW_STACK_PROTECTION=y
 
-CONFIG_GPIO=y
+# Enable UART console on all configurations for convenience. This is usually
+# done at board level upstream so that all samples output printed messages to
+# the configured #zephyr,console. In production boards, this may be enabled at
+# application level or in a debug configuration overlay.
+CONFIG_SERIAL=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
 
 CONFIG_PINCTRL=y