hal: 8916 & 8974 platform convergence

- Convergence specific to SDM660 and SDM429
- Add audio_configs.xml for SDM845 and SDM710
- Add wsa feature flag to configs file for
  msmnile and kona.

Change-Id: Ia9b1923e94014a62743e9a6f55bb007e11c0d921
diff --git a/hal/ahal_config_helper.h b/hal/ahal_config_helper.h
index 048b9cc..3251961 100644
--- a/hal/ahal_config_helper.h
+++ b/hal/ahal_config_helper.h
@@ -64,6 +64,7 @@
     bool a2dp_offload_enabled;
     bool hfp_enabled;
     bool vbat_enabled;
+    bool wsa_enabled;
     bool ext_hw_plugin_enabled;
     bool record_play_concurrency;
     bool hdmi_passthrough_enabled;
@@ -84,3 +85,4 @@
 #ifdef __cplusplus
 }
 #endif
+