x86: reboot: remove inb_p usage
We are driving a motherboard port so use a 2uS explicit delay at this point. Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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