Merge pull request #13098 from luotao1/fix_mkldnn_include

fix mkldnn include format

Author: luotao1

paddle/fluid/platform/device_context.h

@@ -24,7 +24,7 @@ limitations under the License. */
 #endif
 
 #ifdef PADDLE_WITH_MKLDNN
-#include <mkldnn.hpp>
+#include "mkldnn.hpp"
 #endif
 
 #include <map>