add support for newer Lenovo ThinkPads to acpi_ibm
add support for newer Lenovo ThinkPads to acpi_ibm

PR:		kern/164538
Submitted by:	Pierre Imai <pierre@imai.at>
MFC after:	2 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase