am335x_evm: enable NAND support

Enable NAND support for AM335X boards.
Signed-off-by: NIlya Yanok <ilya.yanok@cogentembedded.com>

board/ti/am335x/board.c

@@ -318,6 +318,8 @@ int board_init(void)
 
 	gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;
 
+	gpmc_init();
+
 	return 0;
 }
 

include/configs/am335x_evm.h

@@ -274,4 +274,16 @@
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_SMSC
 
+#define CONFIG_NAND
+/* NAND support */
+#ifdef CONFIG_NAND
+#define CONFIG_CMD_NAND
+#define CONFIG_NAND_OMAP_GPMC
+#define GPMC_NAND_ECC_LP_x16_LAYOUT	1
+#define CONFIG_SYS_NAND_BASE		(0x08000000)	/* physical address */
+							/* to access nand at */
+							/* CS0 */
+#define CONFIG_SYS_MAX_NAND_DEVICE	1		/* Max number of NAND */
+#endif							/* devices */
+
 #endif	/* ! __CONFIG_AM335X_EVM_H */