MX28 poweroff issue

[Russell King - ARM Linux]

On Wed, Jul 04, 2012 at 12:30:36AM +0200, Marek Vasut wrote:
> I recently confirmed this issue when doing "poweroff". The issue was
> initially reported by Detlev Zundel.

My guess is it's because we don't disable interrupts on halt - because
the kernel used to allow halt followed by another ctrl-alt-reboot to
cause the thing to reboot.

That's long since gone, so we might as well make the CPU spin endlessly
waiting for someone to pull the power on halt...