libata: Use dev_name() for request_irq() to distinguish devices

Use dev_name() instead of driver name for request_irq().
This will help to distinguish between multiple identical devices.

Before:
 CPU0
 5:      34425  clps711x-intc   5  pata_of_platform
 6:       6778  clps711x-intc   6  pata_of_platform

After:
 CPU0
 5:       2182  clps711x-intc   5  20000000.ide
 6:      11024  clps711x-intc   6  20100000.ide

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Tejun Heo <tj@kernel.org>

drivers/ata/libata-core.c

@@ -6227,7 +6227,7 @@ int ata_host_activate(struct ata_host *host, int irq,
 	}
 
 	rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags,
-			      dev_driver_string(host->dev), host);
+			      dev_name(host->dev), host);
 	if (rc)
 		return rc;