WIP drivers

This issue covers work-in-progress and incomplete drivers.

Driver	What is missing?	Completed?
acpid	- Lack of drivers for devices controlled using AML - The AML parser does not work on real hardware - It doesn't use any ACPI functionality other than S5 shutdown - Needs to implement something like "determine the battery status" on real hardware (hard)	No
alxd	Lack of datasheet to finish	No
amlserde	TODO	No
sb16d	Need to determine a way to allocate memory under 16MiB for use in ISA DMA	No
usbctl	Missing class drivers for various classes	No
usbhidd	Has tons of descriptors that are possible, not all are supported	No
usbscsid	Missing class drivers for various classes	No
virtio-blkd	TODO	No
virtio-gpud	TODO	No
virtio-netd	TODO	No
xhcid	TODO	No