linuxkpi: Add `pci_map_rom()` and `pci_unmap_rom()`
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Authored by dumbbell on Sun, Jun 14, 9:13 AM.

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Summary

They were already defined as macros in various places in DRM drivers, aliasing the vga_pci_map_bios() and vga_pci_unmap_bios() functions. Let's move them to linuxkpi and avoid copies everywhere.

Because they use the vga_pci code internally, pci_map_rom() checks whether the given device is a video card. If it is not, it logs a "TODO" and returns NULL.