m68k: fix typos in comments

Various spelling mistakes in comments.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>

arch/m68k/coldfire/intc.c

@@ -28,7 +28,7 @@
 unsigned char mcf_irq2imr[NR_IRQS];
 
 /*
- * Define the miniumun and maximum external interrupt numbers.
+ * Define the minimum and maximum external interrupt numbers.
  * This is also used as the "level" interrupt numbers.
  */
 #define	EIRQ1	25

arch/m68k/coldfire/m53xx.c

@@ -532,7 +532,7 @@ int clock_pll(int fsys, int flags)
 		writel(readl(MCF_SDRAMC_SDCR) | MCF_SDRAMC_SDCR_CKE,
 			MCF_SDRAMC_SDCR);
 
-	/* Errata - workaround for SDRAM opeartion after exiting LIMP mode */
+	/* Errata - workaround for SDRAM operation after exiting LIMP mode */
 	writel(MCF_SDRAMC_REFRESH, MCF_SDRAMC_LIMP_FIX);
 
 	/* wait for DQS logic to relock */

arch/m68k/coldfire/pci.c

@@ -31,7 +31,7 @@ static struct pci_bus *rootbus;
 static unsigned long iospace;
 
 /*
- * We need to be carefull probing on bus 0 (directly connected to host
+ * We need to be careful probing on bus 0 (directly connected to host
  * bridge). We should only access the well defined possible devices in
  * use, ignore aliases and the like.
  */