rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/mcf547x_8x/speed.c b/cpu/mcf547x_8x/speed.c
index 28fe657..2cee488 100644
--- a/cpu/mcf547x_8x/speed.c
+++ b/cpu/mcf547x_8x/speed.c
@@ -37,7 +37,7 @@
 {
 	DECLARE_GLOBAL_DATA_PTR;
 
-	gd->bus_clk = CFG_CLK;
+	gd->bus_clk = CONFIG_SYS_CLK;
 	gd->cpu_clk = (gd->bus_clk * 2);
 
 #ifdef CONFIG_FSL_I2C