sdio: split up common and function CIS parsing

Add a more clean separation between global, common CIS information
and the function specific one as we need the common information in
places where no specific function is specified.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/core/sdio_bus.c

@@ -95,7 +95,7 @@ static void sdio_release_func(struct device *dev)
 {
 	struct sdio_func *func = dev_to_sdio_func(dev);
 
-	sdio_free_cis(func);
+	sdio_free_func_cis(func);
 
 	kfree(func);
 }