audio: Update missing SPKR and HP combo device usecase path

Add voice speaker and headphone combo device path for voice.
This is required only for internal codec target where both
speaker and headphone are on the same backend.

CRs-Fixed: 2204816
Change-Id: Idb5768153752a7f3117af6f578935edec9a7f462
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index 2e824b0..8d14cdf 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -792,6 +792,7 @@
     {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_SPEAKER_2_PROTECTED_VBAT)},
     {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_PROTECTED_RAS)},
     {TO_NAME_INDEX(SND_DEVICE_OUT_SPEAKER_PROTECTED_VBAT_RAS)},
+    {TO_NAME_INDEX(SND_DEVICE_OUT_VOICE_SPEAKER_AND_VOICE_HEADPHONES)},
 #ifdef RECORD_PLAY_CONCURRENCY
     {TO_NAME_INDEX(SND_DEVICE_OUT_VOIP_HANDSET)},
     {TO_NAME_INDEX(SND_DEVICE_OUT_VOIP_SPEAKER)},