mmc: update header file paths

Make sure all headers in the files reflect their true position
in the tree.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 7dd720f..913e75f 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -1,5 +1,5 @@
 /*
- *  linux/drivers/mmc/mmc_ops.h
+ *  linux/drivers/mmc/core/mmc_ops.h
  *
  *  Copyright 2006-2007 Pierre Ossman
  *