sdio: give sdio irq thread a host specific name

There is one thread per host controller so make sure they all get
unique names.

Signed-off-by: Pierre Ossman <[e-mail]>

drivers/mmc/core/sdio_irq.c

···
 	if (!host->sdio_irqs++) {
 		atomic_set(&host->sdio_irq_thread_abort, 0);
 		host->sdio_irq_thread =
-			kthread_run(sdio_irq_thread, host, "ksdiorqd");
+			kthread_run(sdio_irq_thread, host, "ksdioirqd/%s",
+				mmc_hostname(host));
 		if (IS_ERR(host->sdio_irq_thread)) {
 			int err = PTR_ERR(host->sdio_irq_thread);
 			host->sdio_irqs--;