Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>

drivers/ssb/pci.c

@@ -670,7 +670,7 @@ static int ssb_pci_sprom_get(struct ssb_bus *bus,
 		ssb_printk(KERN_ERR PFX "No SPROM available!\n");
 		return -ENODEV;
 	}
-	if (bus->chipco.dev) {	/* can be unavailible! */
+	if (bus->chipco.dev) {	/* can be unavailable! */
 		/*
 		 * get SPROM offset: SSB_SPROM_BASE1 except for
 		 * chipcommon rev >= 31 or chip ID is 0x4312 and

drivers/ssb/sprom.c

@@ -185,7 +185,7 @@ bool ssb_is_sprom_available(struct ssb_bus *bus)
 	/* this routine differs from specs as we do not access SPROM directly
 	   on PCMCIA */
 	if (bus->bustype == SSB_BUSTYPE_PCI &&
-	    bus->chipco.dev &&	/* can be unavailible! */
+	    bus->chipco.dev &&	/* can be unavailable! */
 	    bus->chipco.dev->id.revision >= 31)
 		return bus->chipco.capabilities & SSB_CHIPCO_CAP_SPROM;