ppc4xx: Move definition for PPC4xx NAND FLASH controller to header

This patch moves the definition for the PPC4xx NAND FLASH controller
(NDFC) CONFIG_NAND_NDFC into include/ppc4xx.h. This is needed for the
upcoming fix for the ECC byte ordering of the NDFC driver.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Scott Wood <scottwood@freescale.com>
diff --git a/include/ppc4xx.h b/include/ppc4xx.h
index f147885..55ff323 100644
--- a/include/ppc4xx.h
+++ b/include/ppc4xx.h
@@ -46,6 +46,13 @@
 #define CONFIG_SDRAM_PPC4xx_IBM_DDR2	/* IBM DDR(2) controller */
 #endif
 
+#if defined(CONFIG_440EP) || defined(CONFIG_440GR) ||	\
+    defined(CONFIG_440EPX) || defined(CONFIG_440GRX) ||	\
+    defined(CONFIG_405EZ) || defined(CONFIG_405EX) ||	\
+    defined(CONFIG_460EX) || defined(CONFIG_460GT)
+#define CONFIG_NAND_NDFC
+#endif
+
 /* PLB4 CrossBar Arbiter Core supported across PPC4xx families */
 #if defined(CONFIG_405EX) || \
     defined(CONFIG_440EP) || defined(CONFIG_440EPX) || \