Adds missing headers library for media/AudioContainers.h.

Change-Id: I32738a10b323336941c00bc83e0db07afe26f07d
diff --git a/policy_hal/Android.mk b/policy_hal/Android.mk
index 689838e..b26cb36 100644
--- a/policy_hal/Android.mk
+++ b/policy_hal/Android.mk
@@ -17,6 +17,7 @@
                     $(call include-path-for, avextension) \
 
 LOCAL_HEADER_LIBRARIES := \
+        libaudiofoundation_headers \
         libbase_headers \
         libstagefright_foundation_headers