PNP resource_table cleanups

This series of patches does some PNP housecleaning and consolidation.

PNP currently uses a fixed-size table (pnp_resource_table) to track the IO, MMIO, IRQ, and DMA resources used by a device. Some motherboard devices have many resources, so we've been plagued by table overflows and we've had to drastically increase the table size, which wastes a lot of memory.

The end goal is to replace that fixed-size table with something more dynamic. These patches don't go that far, but they do make pnp_resource_table private to the PNP core and centralize all references to it in a small set of shared functions.

In addition, this series contains a number of related cleanups, like centralized allocation of struct pnp_dev, conversion to dev_printk when possible, removing many PNP core internal functions from the public interface, and alignment of the ISAPNP, PNPBIOS, and PNPACPI backends.

Bjorn