Build fails with Ubuntu 23.04 kernel linux-image-6.2.0-20-generic: ‘struct acpi_device’ has no member named ‘children’

[alex-kowalczyk]

/var/lib/dkms/thinkpad_acpi/1.0/build/thinkpad_acpi.c: In function ‘tpacpi_query_bcl_levels’:
/var/lib/dkms/thinkpad_acpi/1.0/build/thinkpad_acpi.c:6862:43: error: ‘struct acpi_device’ has no member named ‘children’
 6862 |         list_for_each_entry(child, &device->children, node) {

Full make.log attached: make.log