src/acpi to src/lib: Fix spelling errors

These issues were found and fixed by codespell, a useful tool for
finding spelling errors.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: I5b8ecdfe75d99028fee820a2034466a8ad1c5e63
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58080
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/device/pci_early.c

@@ -104,7 +104,7 @@ void pci_early_bridge_init(void)
 }
 
 /* FIXME: A lot of issues using the following, please avoid.
- * Assumes 256 PCI busses, scans them all even when PCI bridges are still
+ * Assumes 256 PCI buses, scans them all even when PCI bridges are still
  * disabled. Probes all functions even if 0 is not present.
  */
 pci_devfn_t pci_locate_device(unsigned int pci_id, pci_devfn_t dev)