Merge branch 'acpica'

Merge branch 'acpica'

* acpica: (22 commits)
  ACPICA: Fix for ill-formed GUID strings for NFIT tables.
  ACPICA: acpihelp: Update for new NFIT table GUIDs.
  ACPICA: Update version to 20150515.
  ACPICA: ACPI 6.0: Add support for NFIT table.
  ACPICA: acpi_help: Add option to display all known/supported ACPI tables.
  ACPICA: iASL/disassembler - fix possible fault for -e option.
  ACPICA: ACPI 6.0: Add changes for DRTM table.
  ACPICA: ACPI 6.0: Add support for IORT table.
  ACPICA: ACPI 6.0: Add ACPI_SUB_PTR().
  ACPICA: ACPI 6.0: Add changes for MADT table.
  ACPICA: Hardware: Fix a resource leak issue in acpi_hw_build_pci_list().
  ACPICA: Dispatcher: Fix a resource leak issue in acpi_ds_auto_serialize_method().
  ACPICA: ACPI 6.0: Add changes for LPIT table.
  ACPICA: ACPI 6.0: Add changes for FADT table.
  ACPICA: ACPI 6.0: Add support for WPBT table.
  ACPICA: iASL: Enhance detection of non-ascii or corrupted input files.
  ACPICA: Parser: Move a couple externals to the proper header.
  ACPICA: ACPI 6.0: Add support for XENV table.
  ACPICA: ACPI 6.0: Add support for new predefined names.
  ACPICA: ACPI 6.0: Add support for STAO table.
  ...