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>
diff --git a/sound/soc/codecs/cx20442.c b/sound/soc/codecs/cx20442.c
index d68ea53..bc7067d 100644
--- a/sound/soc/codecs/cx20442.c
+++ b/sound/soc/codecs/cx20442.c
@@ -15,6 +15,7 @@
 
 #include <linux/tty.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include <sound/core.h>
 #include <sound/initval.h>