Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 44f11ee..14ec641 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -703,7 +703,7 @@
 				data->chip->irq_disable(data);
 				data->chip->irq_set_affinity(data, mask, false);
 				data->chip->irq_enable(data);
-				printk ("Re-targetting CPEI to cpu %d\n", new_cpei_cpu);
+				printk ("Re-targeting CPEI to cpu %d\n", new_cpei_cpu);
 			}
 		}
 		if (!data) {