libaac: Disable WFD on low RAM targets

Change-Id: I5294cfeaf3b5008e173afaa016c87791cb24f5ca
diff --git a/Android.mk b/Android.mk
index 560508e..f8f2bb4 100644
--- a/Android.mk
+++ b/Android.mk
@@ -8,5 +8,7 @@
 endif
 
 ifneq ($(call is-board-platform-in-list,$(WFD_DISABLE_PLATFORM_LIST)),true)
+ifneq ($(TARGET_HAS_LOW_RAM), true)
 include $(call all-makefiles-under, $(LOCAL_PATH))
 endif
+endif