configs: Add flag to control support for 3D audio

Introduce feature flag to control support for
3D audio

Change-Id: I280d0619236c3fc46b0f8623fab58d7f641f6127
CRs-Fixed: 1099039
diff --git a/configs/msm8998/msm8998.mk b/configs/msm8998/msm8998.mk
index 88abb3a..ac078e5 100644
--- a/configs/msm8998/msm8998.mk
+++ b/configs/msm8998/msm8998.mk
@@ -30,6 +30,7 @@
 AUDIO_FEATURE_ENABLED_AUDIOSPHERE := true
 AUDIO_FEATURE_ENABLED_USB_TUNNEL_AUDIO := true
 AUDIO_FEATURE_ENABLED_SPLIT_A2DP := true
+AUDIO_FEATURE_ENABLED_3D_AUDIO := true
 endif
 
 USE_XML_AUDIO_POLICY_CONF := 1