PM: hibernate: remove leading spaces before tabs

 1) Run the following command to find and remove the leading spaces
    before tabs:
    $ find kernel/power/ -type f | xargs sed -r -i 's/^[ ]+\t/\t/'
 2) Manually check and correct if necessary
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>