Fix build.

Change-Id: I7b0cf6a248c74f1a06e0b5d51a5be13124ced6a0
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index 3a3f4c5..20ad7ea 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -56,7 +56,6 @@
 
 ifneq ($(WINDOWS_HOST_ONLY),1)
     commonSources += \
-        ashmem-host.cc \
         fs.c \
         multiuser.c \
         socket_inaddr_any_server.c \
@@ -67,6 +66,9 @@
         socket_network_client.c \
         sockets.c \
 
+    commonHostSources += \
+        ashmem-host.c
+
 endif