rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/mpc83xx/interrupts.c b/cpu/mpc83xx/interrupts.c
index 98ed21c..faffbaf 100644
--- a/cpu/mpc83xx/interrupts.c
+++ b/cpu/mpc83xx/interrupts.c
@@ -38,9 +38,9 @@
 
 int interrupt_init_cpu (unsigned *decrementer_count)
 {
-	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
 
-	*decrementer_count = (gd->bus_clk / 4) / CFG_HZ;
+	*decrementer_count = (gd->bus_clk / 4) / CONFIG_SYS_HZ;
 
 	/* Enable e300 time base */