LinuxKPI: Add acpi_dev_get_first_match_dev and acpi_device_handle

acpi_dev_get_first_match_dev returns the first match of ACPI device
and acpi_device_handle returns its ACPI handle.

Sponsored by: Serenity Cyber Security, LLC
MFC after: 1 week
Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D45847