acpi: Fix CPU hot removal problem

Canquan,
Please re-send.
The version I have doesn't apply, possibly b/c my e-mail got a little screwed up when kernel.org went away.

thanks,
-Len

Hi Len,
I will re-send the patch on another email and attach the patch by
the attachment. The reason you can't apply may be that I copy the patch to the email. and why I do that ,because my linux server can't connect to the internet.

Thanks,
-Canquan.shen