Work around SysTick bug for QEMU ARMv8-M#724

Merged

aggarg merged 3 commits intoFreeRTOS:mainfrom jefftenney:accommodate-old-QEMU-SysTick-bug

Jul 27, 2023

+189-42

Commits on Apr 9, 2023

Set SysTick CLKSOURCE bit before enabling SysTick
jefftenney
committed

Commits on Jul 27, 2023