audio: Initialize processstate with vndbinder

Initialize processtate with vndbinder to allow
vendor components to talk via vndbinder

Test: re-launch android.hardware.audio@2.0 service
Change-Id: I9fafff157c5e497a8125b13741b56e0852534ffa
diff --git a/audio/2.0/default/Android.mk b/audio/2.0/default/Android.mk
index 12713d3..edf1761 100644
--- a/audio/2.0/default/Android.mk
+++ b/audio/2.0/default/Android.mk
@@ -31,6 +31,7 @@
 LOCAL_CFLAGS := -Wall -Werror
 
 LOCAL_SHARED_LIBRARIES := \
+    libbinder \
     libhidlbase \
     libhidltransport \
     liblog \