Use <condition_variable> and <mutex.h> from MinGW

New MinGW prebuilts update includes pthreads and C++11 threads support.
Use mutex.h and condition_variable provided by MinGW.

Test: Build AOSP with new MinGW prebuilts
Change-Id: Ia8f890f86652612df3fc2618c2bfbb450a5a2f52
diff --git a/transport_local.cpp b/transport_local.cpp
index 395b893..89e950d 100644
--- a/transport_local.cpp
+++ b/transport_local.cpp
@@ -17,8 +17,6 @@
 #define TRACE_TAG TRANSPORT
 
 #include "sysdeps.h"
-#include "sysdeps/condition_variable.h"
-#include "sysdeps/mutex.h"
 #include "transport.h"
 
 #include <errno.h>
@@ -27,6 +25,7 @@
 #include <string.h>
 #include <sys/types.h>
 
+#include <condition_variable>
 #include <vector>
 
 #include <android-base/stringprintf.h>