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/dsp/q6adm.c b/dsp/q6adm.c
index 77c2897..78ce2b8 100644
--- a/dsp/q6adm.c
+++ b/dsp/q6adm.c
@@ -5246,7 +5246,7 @@
 	return 0;
 }
 
-void __exit adm_exit(void)
+void adm_exit(void)
 {
 	mutex_destroy(&dts_srs_lock);
 	adm_delete_cal_data();