Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/m68k/platform/5272/intc.c b/arch/m68k/platform/5272/intc.c
index 43e6e96..7e715df 100644
--- a/arch/m68k/platform/5272/intc.c
+++ b/arch/m68k/platform/5272/intc.c
@@ -33,7 +33,7 @@
  *
  * Note that the external interrupts are edge triggered (unlike the
  * internal interrupt sources which are level triggered). Which means
- * they also need acknowledgeing via acknowledge bits.
+ * they also need acknowledging via acknowledge bits.
  */
 struct irqmap {
 	unsigned char	icr;