hal: Add change to fix speaker and headphone concurrency.

After the device switch from headset to the speaker, lag in playback
was observed.
The issue was seen because both the speaker and headphone was
configured using the native clock.
Add change to configure headphone to 48Khz sample rate before enabling
the use case on speaker.

Change-Id: I8ad1f2690e94a960f61fb7f36f49e8f6e5cace60
diff --git a/hal/platform_api.h b/hal/platform_api.h
index f68d6e7..f58dce0 100644
--- a/hal/platform_api.h
+++ b/hal/platform_api.h
@@ -334,6 +334,7 @@
 int platform_get_ext_disp_type(void *platform);
 void platform_invalidate_hdmi_config(void *platform);
 void platform_invalidate_backend_config(void * platform,snd_device_t snd_device);
+bool platform_get_spkr_hph_single_be_native_concurrency_flag();
 
 #ifdef INSTANCE_ID_ENABLED
 void platform_make_cal_cfg(acdb_audio_cal_cfg_t* cal, int acdb_dev_id,