mpc85xx: Add support for the MPC8536

The MPC8536 Adds SDHC and SATA controllers to the PQ3 family.  We
also have SERDES init code for the 8536.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: Dejan Minic <minic@freescale.com>
Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Dave Liu <daveliu@freescale.com>
diff --git a/cpu/mpc85xx/speed.c b/cpu/mpc85xx/speed.c
index 699441b4..1cda1e3 100644
--- a/cpu/mpc85xx/speed.c
+++ b/cpu/mpc85xx/speed.c
@@ -110,6 +110,10 @@
 #endif
 	gd->i2c2_clk = gd->i2c1_clk;
 
+#if defined(CONFIG_MPC8536)
+	gd->sdhc_clk = gd->bus_clk / 2;
+#endif
+
 #if defined(CONFIG_CPM2)
 	gd->vco_out = 2*sys_info.freqSystemBus;
 	gd->cpm_clk = gd->vco_out / 2;