global: Move remaining CONFIG_SYS_NAND_* to CFG_SYS_NAND_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_NAND
namespace do not easily transition to Kconfig. In many cases they likely
should come from the device tree instead. Move these out of CONFIG
namespace and in to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/freescale/t208xrdb/law.c b/board/freescale/t208xrdb/law.c
index d3b263f..3ff4c77 100644
--- a/board/freescale/t208xrdb/law.c
+++ b/board/freescale/t208xrdb/law.c
@@ -25,8 +25,8 @@
 	/* Limit DCSR to 32M to access NPC Trace Buffer */
 	SET_LAW(CONFIG_SYS_DCSRBAR_PHYS, LAW_SIZE_32M, LAW_TRGT_IF_DCSR),
 #endif
-#ifdef CONFIG_SYS_NAND_BASE_PHYS
-	SET_LAW(CONFIG_SYS_NAND_BASE_PHYS, LAW_SIZE_1M, LAW_TRGT_IF_IFC),
+#ifdef CFG_SYS_NAND_BASE_PHYS
+	SET_LAW(CFG_SYS_NAND_BASE_PHYS, LAW_SIZE_1M, LAW_TRGT_IF_IFC),
 #endif
 };