fix comments with new drivers organization

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
diff --git a/nand_spl/board/amcc/acadia/Makefile b/nand_spl/board/amcc/acadia/Makefile
index 6e53bea..4272108 100644
--- a/nand_spl/board/amcc/acadia/Makefile
+++ b/nand_spl/board/amcc/acadia/Makefile
@@ -97,7 +97,7 @@
 	@rm -f $(obj)nand_boot.c
 	ln -s $(SRCTREE)/nand_spl/nand_boot.c $(obj)nand_boot.c
 
-# from drivers/nand directory
+# from drivers/mtd/nand directory
 $(obj)nand_ecc.c:
 	@rm -f $(obj)nand_ecc.c
 	ln -s $(SRCTREE)/drivers/mtd/nand/nand_ecc.c $(obj)nand_ecc.c