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/README b/README
index f24decf..f540757 100644
--- a/README
+++ b/README
@@ -1364,18 +1364,18 @@
 		CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT,
 		CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE,
 		CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS,
-		CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE,
-		CONFIG_SYS_NAND_ECCBYTES
+		CFG_SYS_NAND_ECCPOS, CFG_SYS_NAND_ECCSIZE,
+		CFG_SYS_NAND_ECCBYTES
 		Defines the size and behavior of the NAND that SPL uses
 		to read U-Boot
 
-		CONFIG_SYS_NAND_U_BOOT_DST
+		CFG_SYS_NAND_U_BOOT_DST
 		Location in memory to load U-Boot to
 
-		CONFIG_SYS_NAND_U_BOOT_SIZE
+		CFG_SYS_NAND_U_BOOT_SIZE
 		Size of image to load
 
-		CONFIG_SYS_NAND_U_BOOT_START
+		CFG_SYS_NAND_U_BOOT_START
 		Entry point in loaded image to jump to
 
 		CONFIG_SPL_RAM_DEVICE