rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/post/drivers/i2c.c b/post/drivers/i2c.c
index f54fe99..b152dea 100644
--- a/post/drivers/i2c.c
+++ b/post/drivers/i2c.c
@@ -39,7 +39,7 @@
 #include <post.h>
 #include <i2c.h>
 
-#if CONFIG_POST & CFG_POST_I2C
+#if CONFIG_POST & CONFIG_SYS_POST_I2C
 
 int i2c_post_test (int flags)
 {
@@ -88,4 +88,4 @@
 #endif
 }
 
-#endif /* CONFIG_POST & CFG_POST_I2C */
+#endif /* CONFIG_POST & CONFIG_SYS_POST_I2C */