rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/sh4/time.c b/cpu/sh4/time.c
index 5f8a3a0..77e0ae2 100644
--- a/cpu/sh4/time.c
+++ b/cpu/sh4/time.c
@@ -86,7 +86,7 @@
 void udelay (unsigned long usec)
 {
 	unsigned int start = get_timer (0);
-	unsigned int end = start + (usec * ((CFG_HZ + 500000) / 1000000));
+	unsigned int end = start + (usec * ((CONFIG_SYS_HZ + 500000) / 1000000));
 
 	while (get_timer (0) < end)
 		continue;
@@ -94,5 +94,5 @@
 
 unsigned long get_tbclk (void)
 {
-	return CFG_HZ;
+	return CONFIG_SYS_HZ;
 }