linux/mtd/nand.h has been included at line 17. So we remove the duplicate one at line 21. Signed-off-by: Wan Jiabing <wanjiabing@vivo.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210323031737.259365-1-wanjiabing@vivo.com