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/include/configs/mx6sxsabreauto.h b/include/configs/mx6sxsabreauto.h
index 0d9764e..a41e428 100644
--- a/include/configs/mx6sxsabreauto.h
+++ b/include/configs/mx6sxsabreauto.h
@@ -86,7 +86,7 @@
 #define CFG_SYS_FSL_ESDHC_ADDR	USDHC3_BASE_ADDR
 
 /* NAND stuff */
-#define CONFIG_SYS_NAND_BASE           0x40000000
+#define CFG_SYS_NAND_BASE           0x40000000
 
 /* DMA stuff, needed for GPMI/MXS NAND support */