Exclude from Mac build.

The code doesn't build on Mac.
Temporarily exclude this project from Mac builld.

Bug: 21669400
Bug: 21734546
Change-Id: I68278d69803219dadd27487ed06c52d77a5a9833
diff --git a/Android.mk b/Android.mk
index f5f1064..fd6d109 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,5 +1,5 @@
 # Recursive call sub-folder Android.mk
 #
-
+ifeq ($(HOST_OS),linux)
 include $(call all-subdir-makefiles)
-
+endif