Fix/k32w0 shell app

[doru91]

Problem

• shell app was not working on K32W0

Change overview

• fix linkage error by disabling the ping functionality
• fix deadlock in Thread implementation
• fix printing by adding CR
• This commit relates to Fix issues with Shell app example #11346

Testing

• testing using chip-tool

[jmartinez-silabs]

I am confuse. This PR is to apply to the Test event 7 branch ? If you need it in the branch officially should we not just cherry-pick the shell fixes already in master ?

If you also need other changes for NXP, I think those should first be merged in master and then cherry-picked if need be to the te7 branch

[andy31415]

Adding checkmark because merge from master. The "\r" seems odd to me since that may not be a correct choice for all platforms (I would argue that probably it was added for windows monitoring rather than linux) however that is in master and probably does not cause that much harm.

[doru91]

I am confuse. This PR is to apply to the Test event 7 branch ? If you need it in the branch officially should we not just cherry-pick the shell fixes already in master ?

If you also need other changes for NXP, I think those should first be merged in master and then cherry-picked if need be to the te7 branch

I made the changes during TE7 and that's why I targeted TE7 branch initially. Later on I also needed it on master branch and opened a PR there. But I agree, In the future I will submit the fix to the master branch and then we can cherry-pick from there.