sound: Add module.h to the previously silent sound users

Lots of sound drivers were getting module.h via the implicit presence
of it in <linux/device.h> but we are going to clean that up.  So
fix up those users now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

sound/core/hwdep.c

@@ -24,6 +24,7 @@
 #include <linux/slab.h>
 #include <linux/time.h>
 #include <linux/mutex.h>
+#include <linux/module.h>
 #include <sound/core.h>
 #include <sound/control.h>
 #include <sound/minors.h>