hal: add support for dolby license validation

Add dolby audio_extn API's to set dolby license.
License needs to be set with dsp everytime it is loaded.

Change-Id: I21d58a21d65c823469d066f4ba5edc5b2660ea1e
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index 4ca7ce7..d8cefda 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -706,6 +706,9 @@
     /* Read one time ssr property */
     audio_extn_ssr_update_enabled();
     audio_extn_spkr_prot_init(adev);
+
+    audio_extn_dolby_set_license(adev);
+
     return my_data;
 }