hal: Add check for afe loopback for send app type config for HFP call

Add check for is afe loop back enabled based on platform file

Change-Id: I24b91db06769486b79a32c00bfb28f7b3ffcb445
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index 2a335f0..d31df8e 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -7665,6 +7665,11 @@
     return false;
 }
 
+int platform_get_is_afe_loopback_enabled(void *platform __unused)
+{
+   return 0;
+}
+
 int platform_set_edid_channels_configuration(void *platform, int channels, int backend_idx __unused, snd_device_t snd_device __unused) {
 
     struct platform_data *my_data = (struct platform_data *)platform;