Mac build fix

Change-Id: I5fa797c2c780467fdc768eef5a87cdba0e6998a7
diff --git a/system/vulkan_enc/ResourceTracker.cpp b/system/vulkan_enc/ResourceTracker.cpp
index 2c38dad..0bf1a5b 100644
--- a/system/vulkan_enc/ResourceTracker.cpp
+++ b/system/vulkan_enc/ResourceTracker.cpp
@@ -139,7 +139,7 @@
 #include <stdlib.h>
 #include <sync/sync.h>
 
-#if defined(__ANDROID__) || defined(__linux__)
+#if defined(__ANDROID__) || defined(__linux__) || defined(__APPLE__)
 
 #include <sys/mman.h>
 #include <unistd.h>