libhidlbase: don't export libbase

Bug: 37791060
Test: links

Change-Id: I7abed348fb8b8800bb3b8c3cb537736f6ed55c7a
diff --git a/base/include/hidl/MQDescriptor.h b/base/include/hidl/MQDescriptor.h
index abab212..23be971 100644
--- a/base/include/hidl/MQDescriptor.h
+++ b/base/include/hidl/MQDescriptor.h
@@ -17,7 +17,8 @@
 #ifndef _FMSGQ_DESCRIPTOR_H
 #define _FMSGQ_DESCRIPTOR_H
 
-#include <android-base/macros.h>
+#include <unistd.h>
+
 #include <cutils/native_handle.h>
 #include <hidl/HidlInternal.h>
 #include <hidl/HidlSupport.h>