palm_bk3710: add warm-plug support

Don't fail the probe if there are no devices attached to the controller.

Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/arm/palm_bk3710.c

@@ -409,9 +409,6 @@ static int __devinit palm_bk3710_probe(struct platform_device *pdev)
 
 	ide_device_add(idx, &palm_bk3710_port_info);
 
-	if (!hwif->present)
-		goto out;
-
 	return 0;
 out:
 	printk(KERN_WARNING "Palm Chip BK3710 IDE Register Fail\n");