ASoC: allow drivers to compile both static and dynamic

Based on where the code is synced the driver should allow
both static and dynamic linked compilation.
Also remove __exit for modules loaded from another common
init/exit functions.

Change-Id: Ib58f152002aba3af4446f9bbd9b82c279212bd0a
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>
diff --git a/asoc/msm-dai-slim.c b/asoc/msm-dai-slim.c
index 427fd6c..e8bdf13 100644
--- a/asoc/msm-dai-slim.c
+++ b/asoc/msm-dai-slim.c
@@ -653,7 +653,7 @@
 	return rc;
 }
 
-void __exit msm_dai_slim_exit(void)
+void msm_dai_slim_exit(void)
 {
 	slim_driver_unregister(&msm_dai_slim_driver);
 }