You can try ignore_resource_conflict which is it87 specific, rather than a system wide acpi_enforce_resources.
modprobe it87 force_id=0x8628 ignore_resource_conflict=1
The reason why this is needed is ACPI claims the I/O ports required to talk to the it87, and Linux doesn't want to override that.
Epic!
You should be able to add
options it87 force_id=0x8688 ignore_resource_conflict=1to/etc/modprobe.d/it87.conf(or whatever filename) andit87to/etc/modules. To get it to run at startup.