Add missing liblog dependency

Bug: http://b/27171986
Change-Id: I7e68821849bdd7ea69b8fd517c1c29da48b6e571
diff --git a/voice_processing/Android.mk b/voice_processing/Android.mk
index 9b86eaf..73619c6 100644
--- a/voice_processing/Android.mk
+++ b/voice_processing/Android.mk
@@ -14,6 +14,7 @@
     $(call include-path-for, audio-effects)
 
 LOCAL_SHARED_LIBRARIES := \
+    liblog \
     libcutils
 
 LOCAL_SHARED_LIBRARIES += libdl