[PATCH] cleanups in ACPI - removing tboot_ calls for 3.4 (v1)

[Konrad Rzeszutek Wilk]

I am not really sure if these patches should go through the ACPI or x86 tree.
I think they are more x86-ish related and earlier patches for tboot went through
tip.. Thoughts?

Theset two patches cleanup the ACPI code by removing the 'tboot_sleep'
function call within the ACPI call and instead use a function call.

The function call is set if Intel TXT is detected, otherwise we just skip over
and continue on in hwsleep.c.

Tested on AMD, Intel w/TXT and w/o TXT. Also compile tested on IA64 which has
some reference to tboot but does not use it.

The diff-stat:
 arch/x86/kernel/tboot.c       |    9 ++++++---
 drivers/acpi/acpica/hwsleep.c |   10 +++++++---
 drivers/acpi/osl.c            |   24 ++++++++++++++++++++++++
 include/acpi/acexcep.h        |    1 +
 include/linux/acpi.h          |   10 ++++++++++
 include/linux/tboot.h         |    1 -
 6 files changed, 48 insertions(+), 7 deletions(-)


The purpose of this cleanup is two-fold:
 1). Cleanup the call a bit - that 'tboot_sleep' in ACPICA, which is suppose to be
     OS-agnostic code looks odd.
 2). Piggy-back on the function call if running under Xen [https://lkml.org/lkml/2011/12/16/447].
     Those patches are still going through review, but the cleanup patches
     can be submitted as standalone.

Thanks! 
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