sound: add moduleparam.h to users of module_param/MODULE_PARM_DESC

These files were getting access to these two via the implicit
presence of moduleparam.h everywhere.  But that is being fixed, so
get these guys what they need in advance.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/sound/core/misc.c b/sound/core/misc.c
index eb9fe2e..9aad55b 100644
--- a/sound/core/misc.c
+++ b/sound/core/misc.c
@@ -20,6 +20,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/moduleparam.h>
 #include <linux/time.h>
 #include <linux/slab.h>
 #include <linux/ioport.h>