Merge branch 'acpica'

* acpica:
  ACPICA: Update version to 20191018
  ACPICA: debugger: remove leading whitespaces when converting a string to a buffer
  ACPICA: acpiexec: initialize all simple types and field units from user input
  ACPICA: debugger: add field unit support for acpi_db_get_next_token
  ACPICA: debugger: surround field unit output with braces '{'
  ACPICA: debugger: add command to dump all fields of particular subtype
  ACPICA: utilities: add flag to only display data when dumping buffers
  ACPICA: make acpi_load_table() return table index
  ACPICA: Add new external interface, acpi_unload_table()
  ACPICA: More Clang changes
  ACPICA: Win OSL: Replace get_tick_count with get_tick_count64
  ACPICA: Results from Clang