Concurrency hardfaults on Cortex M33 (LPC55S69) with GNU Tools for Arm Embedded Processors 9-2019-q4-major

@brendonsNXP - NXP is still including heap4 (rather than heap_useNewlib) in the generic example I pulled for the LPC55S28. It would be great if you can fix this, and also ensure configUSE_NEWLIB_REENTRANT is set to 1.
Thanks,
Best Regards, Dave