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/mx7dsabresd.h b/include/configs/mx7dsabresd.h
index 2a97d2f..af17658 100644
--- a/include/configs/mx7dsabresd.h
+++ b/include/configs/mx7dsabresd.h
@@ -93,7 +93,7 @@
  */
 #ifdef CONFIG_NAND_MXS
 /* NAND stuff */
-#define CONFIG_SYS_NAND_BASE		0x40000000
+#define CFG_SYS_NAND_BASE		0x40000000
 
 /* DMA stuff, needed for GPMI/MXS NAND support */
 #endif