Fixed building with OpenCL, but without the ocl module.

HAVE_opencv_ocl implies HAVE_OPENCL, so checking for both is not
necessary.

cmake/OpenCVModule.cmake

@@ -499,7 +499,7 @@ macro(ocv_glob_module_sources)
   source_group("Src" FILES ${lib_srcs} ${lib_int_hdrs})
 
   file(GLOB cl_kernels "src/opencl/*.cl")
-  if(HAVE_OPENCL AND cl_kernels)
+  if(HAVE_opencv_ocl AND cl_kernels)
     ocv_include_directories(${OPENCL_INCLUDE_DIRS})
     add_custom_command(
       OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/opencl_kernels.cpp" "${CMAKE_CURRENT_BINARY_DIR}/opencl_kernels.hpp"

modules/superres/perf/perf_superres_ocl.cpp

@@ -42,7 +42,7 @@
 
 #include "perf_precomp.hpp"
 
-#ifdef HAVE_OPENCL
+#ifdef HAVE_OPENCV_OCL
 
 #include "opencv2/ocl/ocl.hpp"
 using namespace std;

samples/gpu/CMakeLists.txt

@@ -49,7 +49,7 @@ if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
       target_link_libraries(${the_target} opencv_nonfree)
     endif()
 
-    if(HAVE_OPENCL)
+    if(HAVE_opencv_ocl)
       target_link_libraries(${the_target} opencv_ocl)
     endif()