extern void board_nand_init(struct mtd_partition *nand_parts,
u8 nr_parts, u8 cs, int nand_type, struct gpmc_timings *gpmc_t);
extern struct gpmc_timings nand_default_timings[];
extern void board_nand_init(struct mtd_partition *nand_parts,
u8 nr_parts, u8 cs, int nand_type, struct gpmc_timings *gpmc_t);
extern struct gpmc_timings nand_default_timings[];