MPC85xx: Beautify boot output of L2 cache configuration

The boot output is now aligned poperly with other boot output
lines, e.g.:

  FLASH: 128 MB
  L2:    512 KB enabled

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
index d585e87..c64bf10 100644
--- a/cpu/mpc85xx/cpu.c
+++ b/cpu/mpc85xx/cpu.c
@@ -167,7 +167,7 @@
 	}
 
 #ifdef CONFIG_CPM2
-	printf("CPM:  %lu Mhz\n", sysinfo.freqSystemBus / 1000000);
+	printf("CPM:   %lu Mhz\n", sysinfo.freqSystemBus / 1000000);
 #endif
 
 	puts("L1:    D-cache 32 kB enabled\n       I-cache 32 kB enabled\n");