rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/sh3/start.S b/cpu/sh3/start.S
index ee0bcdf..c0f8326 100644
--- a/cpu/sh3/start.S
+++ b/cpu/sh3/start.S
@@ -72,6 +72,6 @@
 ._reloc_dst_end:	.long	reloc_dst_end
 ._bss_start:		.long	bss_start
 ._bss_end:		.long	bss_end
-._gd_init:		.long	(_start - CFG_GBL_DATA_SIZE)
-._stack_init:	.long	(_start - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN - 16)
+._gd_init:		.long	(_start - CONFIG_SYS_GBL_DATA_SIZE)
+._stack_init:	.long	(_start - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16)
 ._sh_generic_init:	.long	sh_generic_init