Merge branch 'acpi-tad'

Merge ACPI Time and Alarm Device (TAD) driver updates for 7.1-rc1:

 - Clean up the ACPI TAD driver in various ways and add an RTC class
   device interface, including both the RTC setting/reading and alarm
   timer support, to it (Rafael Wysocki)

* acpi-tad:
  ACPI: TAD: Add alarm support to the RTC class device interface
  ACPI: TAD: Split acpi_tad_rtc_read_time()
  ACPI: TAD: Relocate two functions
  ACPI: TAD: Split three functions to untangle runtime PM handling
  ACPI: TAD: Use DC wakeup only if AC wakeup is supported
  ACPI: TAD: Use dev_groups in struct device_driver
  ACPI: TAD: Update the driver description comment
  ACPI: TAD: Add RTC class device interface
  ACPI: TAD: Clear unused RT data in acpi_tad_set_real_time()
  ACPI: TAD: Rearrange RT data validation checking
  ACPI: TAD: Use __free() for cleanup in time_store()
  ACPI: TAD: Support RTC without wakeup
  ACPI: TAD: Create one attribute group

Author: rafaeljw