ACPICA: Remove indent divergences to reduce maintenance overhead.

The divergences in the ACPICA files makes it difficult to maintain linuxize
ACPICA table commits.  This patch reduces such divergences before applying
table manager commits so that human interventions of patch rebasing can be
reduced.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>