mmc: sdhci: add mmc structure for host

So that sdhci host would tell in the driver that the mmc current
attributes.

Signed-off-by: Lei Wen <leiwen@marvell.com>

drivers/mmc/sdhci.c

@@ -377,6 +377,7 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
 	}
 
 	mmc->priv = host;
+	host->mmc = mmc;
 
 	sprintf(mmc->name, "%s", host->name);
 	mmc->send_cmd = sdhci_send_command;

include/sdhci.h

@@ -27,6 +27,8 @@
 #define __SDHCI_HW_H
 
 #include <asm/io.h>
+#include <mmc.h>
+
 /*
  * Controller registers
  */
@@ -239,6 +241,7 @@ struct sdhci_host {
 	unsigned int quirks;
 	unsigned int version;
 	unsigned int clock;
+	struct mmc *mmc;
 	const struct sdhci_ops *ops;
 };