Used perf_precomp.hpp instead of precomp.hpp for test.

modules/ocl/perf/perf_bgfg.cpp

@@ -42,7 +42,7 @@
 // the use of this software, even if advised of the possibility of such damage.
 //
 //M*/
-#include "precomp.hpp"
+#include "perf_precomp.hpp"
 using namespace cv;
 using namespace cv::ocl;