Added line to stop default libril from compiling.
diff --git a/BoardConfig.mk b/BoardConfig.mk
index f66c54b..62c7507 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -158,6 +158,8 @@
 
 # RIL
 TARGET_RIL_VARIANT := caf
+#override to enable audio.
+BOARD_PROVIDES_LIBRIL := true
 
 # SELinux
 include device/qcom/sepolicy/sepolicy.mk