mtd: nand: fix a typo in a comment line

Signed-off-by: Masahiro Yamada <[e-mail]>
Signed-off-by: Brian Norris <[e-mail]>

drivers/mtd/nand/nand_base.c

···
 
 	chip->onfi_version = 0;
 	if (!type->name || !type->pagesize) {
-		/* Check is chip is ONFI compliant */
+		/* Check if the chip is ONFI compliant */
 		if (nand_flash_detect_onfi(mtd, chip, &busw))
 			goto ident_done;