ACPICA: include/acpi/acpixf.h: Fix indentation

A bunch of the functions declared in include/acpi/acpixf.h have their
name aligned a space after the '(' of e.g. the
`ACPI_EXTERNAL_RETURN_STATUS(acpi_status` line above rather then being
directly aligned after the '('.

This breaks applying patches generated from the ACPICA upstream git,
remove the extra space before the function-names and all the arguments
to fix this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>