ACPICA: change coding style to match ACPICA, no functional change

This commit alters the coding style of the following commit to match
ACPICA to keep divergences between Linux and ACPICA at a minimum.
This is not intended to result in functional changes.

ae6b3e54
Author: Hans de Goede <hdegoede@redhat.com>
Date:   Sun Nov 18 20:25:35 2018 +0100

    ACPICA: Fix handling of buffer-size in acpi_ex_write_data_to_field()

Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>