Patch adds support for notification of overheating conditions on intel
x86_64 processors.  Tested on EM64T, test booted on AMD64.

Hardware courtesy of Intel Corporation
Signed-off-by: Zwane Mwaikambo <zwane@linuxpower.ca>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>