Cleanup: fix "MHz" spelling

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/Marvell/db64460/pci.c b/board/Marvell/db64460/pci.c
index a7e3c95..4998095 100644
--- a/board/Marvell/db64460/pci.c
+++ b/board/Marvell/db64460/pci.c
@@ -52,13 +52,13 @@
 		printf ("PCI %d bus mode: Conventional PCI\n", host);
 		break;
 	case 1:
-		printf ("PCI %d bus mode: 66 Mhz PCIX\n", host);
+		printf ("PCI %d bus mode: 66 MHz PCIX\n", host);
 		break;
 	case 2:
-		printf ("PCI %d bus mode: 100 Mhz PCIX\n", host);
+		printf ("PCI %d bus mode: 100 MHz PCIX\n", host);
 		break;
 	case 3:
-		printf ("PCI %d bus mode: 133 Mhz PCIX\n", host);
+		printf ("PCI %d bus mode: 133 MHz PCIX\n", host);
 		break;
 	default:
 		printf ("Unknown BUS %d\n", mode);