Disable stack overflow check for MPU ports
Stack overflow check is not straight forward to implement for MPU ports
because of the following reasons:
1. The context is stroed in TCB and as a result, pxTopOfStack member
points to the context location in TCB.
2. System calls are executed on a separate privileged only stack.
It is still okay because an MPU region is used to protect task stack
which means task stack overflow will trigger an MPU fault.
Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
df0aa5a815