Merge branch 'acpi-ipmi'

Merge branch 'acpi-ipmi'

* acpi-ipmi:
  ACPI / IPMI: Cleanup coding styles
  ACPI / IPMI: Cleanup some Kconfig codes
  ACPI / IPMI: Cleanup some inclusion codes
  ACPI / IPMI: Cleanup some initialization codes
  ACPI / IPMI: Cleanup several acpi_ipmi_device members
  ACPI / IPMI: Add reference counting for ACPI IPMI transfers
  ACPI / IPMI: Use global IPMI operation region handler
  ACPI / IPMI: Fix race caused by the unprotected ACPI IPMI user
  ACPI / IPMI: Fix race caused by the timed out ACPI IPMI transfers
  ACPI / IPMI: Fix race caused by the unprotected ACPI IPMI transfers
  ACPI / IPMI: Fix potential response buffer overflow