mmc: sdhci: print out controller name for register debug

In a multi-controller environment it is helpful to know which controller
has problems.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index e335f4f..829e78a 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -47,7 +47,8 @@
 
 static void sdhci_dumpregs(struct sdhci_host *host)
 {
-	printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n");
+	printk(KERN_DEBUG DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n",
+		mmc_hostname(host->mmc));
 
 	printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version:  0x%08x\n",
 		sdhci_readl(host, SDHCI_DMA_ADDRESS),