drivers/mmc/host/sdhci.h needs scatterlist.h

alpha:

drivers/mmc/host/sdhci.h:242: error: field 'sg_miter' has incomplete type

Cc: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index a06bf8b..e354fae 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -9,6 +9,8 @@
  * your option) any later version.
  */
 
+#include <linux/scatterlist.h>
+
 /*
  * Controller registers
  */