ACPI: AC: Switch over to devres-based resource management

ACPI: AC: Switch over to devres-based resource management

Use devm_kzalloc() for allocating memory, devm_power_supply_register()
for registering a power supply class device and the newly introduced
devm_acpi_install_notify_handler() for installing an ACPI notify handler.

Note that the code ordering change related to the third of the above
modifications does not matter because there is no order dependency
between the battery notifier and the ACPI notify handler.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3422377.44csPzL39Z@rafael.j.wysocki