ACPICA: Removed some tabs and // comments

ACPICA commit 0914618b553d6f3366e568409cebf2656891ca69

Automated cleanup; No functional changes.

Link: https://github.com/acpica/acpica/commit/0914618b


Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>