sm6250-common: define audio feature rules used by audio policy

BoardConfigCommon.mk

@@ -19,6 +19,12 @@ TARGET_2ND_CPU_ABI := armeabi-v7a
 TARGET_2ND_CPU_ABI2 := armeabi
 TARGET_2ND_CPU_VARIANT := cortex-a9
 
+# Audio
+AUDIO_FEATURE_ENABLED_EXTN_FORMATS := true
+AUDIO_FEATURE_ENABLED_HDMI_SPK := true
+AUDIO_FEATURE_ENABLED_PROXY_DEVICE := true
+AUDIO_FEATURE_ENABLED_AHAL_EXT := true
+
 # Audio policy
 USE_CUSTOM_AUDIO_POLICY := 1
 USE_XML_AUDIO_POLICY_CONF := 1