stub rasctl() -- used by libc on ARM (for prehistoric CPUs)
stub rasctl() -- used by libc on ARM (for prehistoric CPUs)

We don't need to do anything for rasctl since we're cooperatively
scheduled without interrupts/signals.

rumpkernel-attic/rumprun-baremetal,rumpkernel-attic/rumprun-baremetal,rumpkernel-attic/rumprun-baremetal