Besides that, I think you really will have to fix your ig4 problem first (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221777). By the way, the ACPI information you provided there suggests that the HID device is a trackpad. That is not supported yet, since iichid only searches for mouse information in the descriptor.

Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
ppc: ppc-1 already exists; skipping it
driver bug: Unable to set devclass (class: ppc devname: (unknown))
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960
Table 'FACP' at 0x78f10960
FACP: Found table at 0x78f10960

driver bug: Unable to set devclass (class: ppc devname: (unknown))
driver bug: Unable to set devclass (class: ppc devname: (unknown))
ig4iic_acpi0: <Designware I2C Controller> iomem 0xe1122000-0xe1122fff irq 7 on acpi0
ig4iic_acpi0: controller error during attach-1
driver bug: Unable to set devclass (class: ppc devname: (unknown))
ig4iic_acpi1: <Designware I2C Controller> iomem 0xe1124000-0xe1124fff irq 7 on acpi0
ig4iic_acpi1: controller error during attach-1
iicbus0: <Philips I2C bus> on ig4iic_acpi0
iic0: <I2C generic I/O> on iicbus0
iicbus1: <Philips I2C bus> on ig4iic_acpi1
iic1: <I2C generic I/O> on iicbus1
driver bug: Unable to set devclass (class: ppc devname: (unknown))
wlan0: Ethernet address: 6c:29:95:4e:a3:68