mtd: nand: pxa3xx: Use waitfunc() to wait for the device to be ready

In pxa3xx_nand_sensing() instead of simply using info->is_ready
after issuing a command, the correct way of checking is to wait
for the device to be ready through the chip's waitfunc().
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

drivers/mtd/nand/pxa3xx_nand.c

@@ -1036,10 +1036,11 @@ static int pxa3xx_nand_sensing(struct pxa3xx_nand_info *info)
 		return ret;
 
 	chip->cmdfunc(mtd, NAND_CMD_RESET, 0, 0);
-	if (!info->need_wait)
-		return 0;
-
+	ret = chip->waitfunc(mtd, chip);
+	if (ret & NAND_STATUS_FAIL)
 		return -ENODEV;
+
+	return 0;
 }
 
 static int pxa3xx_nand_scan(struct mtd_info *mtd)