hal : native DSD concurrency support over headphone.

 -Enable ASRC mode for headphone backend if headphone 44.1 or
  native DSD backend is active.
 -Disable headphone backend and reopen it with ASRC mode for upcoming
  use case over headphone 44.1 or native DSD backend

Change-Id: Ic8fb0ab9f254d3472fda49dbb824f622d518a451
diff --git a/hal/msm8960/platform.c b/hal/msm8960/platform.c
index 1b47e7d..e5d42bd 100644
--- a/hal/msm8960/platform.c
+++ b/hal/msm8960/platform.c
@@ -1266,4 +1266,15 @@
 int platform_get_backend_index(snd_device_t snd_device __unused);
 {
     return 0;
-}
\ No newline at end of file
+}
+
+bool platform_check_codec_asrc_support(void *platform __unused)
+{
+    return false;
+}
+
+bool platform_check_if_backend_has_to_be_disabled(snd_device_t new_snd_device __unused,
+                                                  snd_device_t cuurent_snd_device __unused)
+{
+    return false;
+}