mpc85xx: Add support for the MPC8572DS reference board

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
index bde8e56..5c2231d 100644
--- a/cpu/mpc85xx/cpu.c
+++ b/cpu/mpc85xx/cpu.c
@@ -154,7 +154,7 @@
 #endif
 	clkdiv = lcrr & 0x0f;
 	if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) {
-#if defined(CONFIG_MPC8548) || defined(CONFIG_MPC8544)
+#if defined(CONFIG_MPC8548) || defined(CONFIG_MPC8544) || defined(CONFIG_MPC8572)
 		/*
 		 * Yes, the entire PQ38 family use the same
 		 * bit-representation for twice the clock divider values.