Merge branch 'acpica'

Merge branch 'acpica'

* acpica:
  MAINTAINERS / ACPICA: Add ACPICA information to MAINTAINERS
  ACPICA: Update version to 20130823.
  ACPICA: SCI Handlers: Update handler interface, eliminate unnecessary argument.
  ACPICA: Cleanup exception codes.
  ACPICA: Tables: Cleanup RSDP signature codes.
  ACPICA: Tables: Cleanup table checksum verification code.
  ACPICA: Debugger: Add new command to display full namespace pathnames.
  ACPICA: Operation region support: Never free the handler "context" pointer.
  ACPICA: Add support for host-installed SCI handlers.
  ACPICA: Validate start object for acpi_walk_namespace.
  ACPICA: Debugger: Prevent possible command line buffer overflow, kernel behavior is not affected.
  ACPICA: Linux-specific header: enable "aarch64" 64-bit build.
  ACPICA: Debug output: small formatting update, no functional change.
  ACPICA: acpi_read: On error, do not modify the return value target location.
  ACPICA: Improve error message for "too many parent prefixes" condition.