x86/platform/iosf_mbi: Source cleanup

 - Move the static variables to one place
 - Fix indentations in the header
 - Correct comments

No functional change.

[ tglx: Massaged changelog ]

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: David E . Box <david.e.box@linux.intel.com>
Link: http://lkml.kernel.org/r/1436366709-17683-5-git-send-email-andriy.shevchenko@linux.intel.com


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>