arm/stm32ldiscovery: Update the chrono defconfig

[lupyuen]

Summary

CONFIG_EXAMPLES_CHRONO and CONFIG_EXAMPLES_SLCD are no longer needed in the defconfig for stm32ldiscovery:chrono, due to:

• examples: Add depends on nuttx-apps#2926

This PR removes CONFIG_EXAMPLES_CHRONO and CONFIG_EXAMPLES_SLCD from stm32ldiscovery:chrono

$ tools/refresh.sh --silent stm32ldiscovery:chrono
  Normalize stm32ldiscovery:chrono
< CONFIG_EXAMPLES_CHRONO=y
< CONFIG_EXAMPLES_SLCD=y

Impact

Before this PR: CI Job arm-12 fails the defconfig validation for stm32ldiscovery:chrono.

After this PR: CI Job arm-12 will complete successfully.

Testing

Before The PR

CI Job arm-12 fails the defconfig validation for stm32ldiscovery:chrono, as reported by nuttx-dashboard.org
https://gitlab.com/lupyuen/nuttx-build-log/-/snippets/4789583#L621

Configuration/Tool: stm32ldiscovery/chrono,CONFIG_ARM_TOOLCHAIN_CLANG
  Normalize stm32ldiscovery/chrono
< CONFIG_EXAMPLES_CHRONO=y
< CONFIG_EXAMPLES_SLCD=y

After The PR

CI Job arm-12 completes successfully, tested with Docker
https://gist.github.com/lupyuen/dfddc63bafe0b2c4dd9f4f52d6b12598

sudo docker run \
  -it \
  ghcr.io/apache/nuttx/apache-nuttx-ci-linux:latest \
  /bin/bash
cd
git clone https://github.com/lupyuen2/wip-nuttx nuttx --branch stm32ldiscovery-chrono
git clone https://github.com/apache/nuttx-apps apps
pushd nuttx ; echo NuttX Source: https://github.com/apache/nuttx/tree/$(git rev-parse HEAD) ; popd
pushd apps  ; echo NuttX Apps: https://github.com/apache/nuttx-apps/tree/$(git rev-parse HEAD) ; popd
cd nuttx/tools/ci
./cibuild.sh -c -A -N -R testlist/arm-12.dat 

NuttX Source: https://github.com/apache/nuttx/tree/e40244893c372f4d8e8a6c507f8d5af1a35f2df0
NuttX Apps: https://github.com/apache/nuttx-apps/tree/2cfbdbb4015aeec4a4579891d85bd09e4cdc5b78
Configuration/Tool: stm32ldiscovery/chrono,CONFIG_ARM_TOOLCHAIN_CLANG
Normalize stm32ldiscovery/chrono
[ No Errors ]

[xiaoxiang781216]

@lupyuen it's better to enable the dependence to bring back CONFIG_EXAMPLES_CHRONO.

[raiden00pl]

we should add CONFIG_SLCD=y here instead removing these, otherwise this config doesn't make sense :)

[xiaoxiang781216]

Fixed here: #15427