ARM:OMAP3:Zoom1: Add nand unlock option

Enable NAND_UNLOCK option for unlocking nand for
erase/write operations

Signed-off-by: Nishanth Menon <nm@ti.com>

include/configs/omap3_zoom1.h

@@ -103,6 +103,7 @@
 #define CONFIG_CMD_I2C		/* I2C serial bus support	*/
 #define CONFIG_CMD_MMC		/* MMC support			*/
 #define CONFIG_CMD_NAND		/* NAND support			*/
+#define CONFIG_CMD_NAND_LOCK_UNLOCK /* Enable lock/unlock support */
 
 #undef CONFIG_CMD_FLASH		/* flinfo, erase, protect	*/
 #undef CONFIG_CMD_FPGA		/* FPGA configuration Support	*/