ide-tape: fix build issue

This fixes

drivers/ide/ide-tape.c: In function `idetape_chrdev_open':
drivers/ide/ide-tape.c:1515: error: implicit declaration of function `idetape_read_position'
make[1]: *** [drivers/ide/ide-tape.o] Error 1
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-tape.c

@@ -1512,7 +1512,7 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp)
 		goto out_put_tape;
 	}
 
-	idetape_read_position(drive);
+	ide_tape_read_position(drive);
 	if (!test_bit(ilog2(IDE_AFLAG_ADDRESS_VALID), &drive->atapi_flags))
 		(void)idetape_rewind_tape(drive);