ACPI fixes for 4.18-rc4 - Revert part of a recent ACPICA regression fix that added leading newlines to ACPICA error messages and made the kernel log look broken (Rafael Wysocki). - Fix an ACPI battery driver regression introduced during the 4.17 cycle due to incorrect error handling that made Thinkpad 13 laptops crash on boot (Jouke Witteveen). - Fix up the recently added PPTT ACPI table support by covering the case when a PPTT structure represents a processors group correctly (Sudeep Holla).