modules: trusted-firmware-m: lock scheduler around secure calls

Prevent a thread from being preempted, while executing a Secure
function. This is required to prevent system crashes that could
occur if a thead context switch is triggered in the middle of a
Secure call.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
1 file changed