sdio: change clock speed

Change clock speed to the highest supported by the card.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 1fb36a3..62df8e1 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -294,6 +294,12 @@
 		goto remove;
 
 	/*
+	 * No support for high-speed yet, so just set
+	 * the card's maximum speed.
+	 */
+	mmc_set_clock(host, card->cis.max_dtr);
+
+	/*
 	 * Initialize (but don't add) all present functions.
 	 */
 	for (i = 0;i < funcs;i++) {