hal: Add support to capture mic and ec reference data

Add support to capture mic and ec reference data in single stream.
Add changes to update custom matrix params to configure PSPD.

Change-Id: I29f38c0d778d44217a9e0d59e4b1324f4ee81fdd
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index 41c5941..e6989f6 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -2845,6 +2845,20 @@
     }
 }
 
+struct audio_custom_mtmx_in_params *platform_get_custom_mtmx_in_params(void *platform,
+                                   struct audio_custom_mtmx_in_params_info *info)
+{
+    ALOGW("%s: not implemented!", __func__);
+    return -ENOSYS;
+}
+
+int platform_add_custom_mtmx_in_params(void *platform,
+                                    struct audio_custom_mtmx_in_params_info *info)
+{
+    ALOGW("%s: not implemented!", __func__);
+    return -ENOSYS;
+}
+
 void platform_release_acdb_metainfo_key(void *platform)
 {
     struct platform_data *my_data = (struct platform_data *)platform;