Audio: DLKM support for all audio modules

Switch to DLKM for all audio kernel modules.

Change-Id: I6a96023a21f655f873531af9ace81f2b01eb0f58
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>

dsp/codecs/amrnb_in.c

@@ -394,9 +394,12 @@ struct miscdevice audio_amrnb_in_misc = {
 	.fops	= &audio_in_fops,
 };
 
-static int __init amrnb_in_init(void)
+int __init amrnb_in_init(void)
 {
 	return misc_register(&audio_amrnb_in_misc);
 }
 
-device_initcall(amrnb_in_init);
+void __exit amrnb_in_exit(void)
+{
+	misc_deregister(&audio_amrnb_in_misc);
+}