Merge branches 'acpi-x86', 'acpi-battery', 'acpi-apei' and 'acpi-property'

Merge an x86 cleanup related to ACPI, an ACPI battery driver fix, an
ACPI APEI cleanup, and an ACPI device properties handling update for
6.18-rc1:

 - Remove open coded check for cpu_feature_enabled() from
   acpi_processor_power_init_bm_check() (Mario Limonciello)

 - Add missing synchronization between interface updates in the ACPI
   battery driver (Rafael Wysocki)

 - Remove redundant rcu_read_lock/unlock() under spinlock from
   ghes_notify_hed() in the ACPI APEI support code (pengdonglin)

 - Make the .get_next_child_node() callback in the ACPI fwnode backend
   skip ACPI devices that are not present for consistency with the
   analogous callback in the OF fwnode backend (Sakari Ailus)

* acpi-x86:
  x86/acpi/cstate: Remove open coded check for cpu_feature_enabled()

* acpi-battery:
  ACPI: battery: Add synchronization between interface updates

* acpi-apei:
  ACPI: APEI: Remove redundant rcu_read_lock/unlock() under spinlock

* acpi-property:
  ACPI: property: Return present device nodes only on fwnode interface