Merge pull request #1557 from ilya-lavrenov:ocl_minor_doc_update

diff --cc modules/ocl/include/opencv2/ocl/ocl.hpp
Simple merge

diff --cc modules/ocl/src/arithm.cpp
index 09d250a,00c0beb..341f65c
--- 1/modules/ocl/src/arithm.cpp
--- 2/modules/ocl/src/arithm.cpp
+++ b/modules/ocl/src/arithm.cpp
@@@ -481,10 -521,9 +481,9 @@@ static void arithmetic_minMax_run(cons
  }
  
  template <typename T, typename WT>
- void arithmetic_minMax(const oclMat &src, double *minVal, double *maxVal,
-                                              const oclMat &mask, oclMat &buf)
+ void arithmetic_minMax(const oclMat &src, double *minVal, double *maxVal, const oclMat &mask)
  {
 -    size_t groupnum = src.clCxt->computeUnits();
 +    size_t groupnum = src.clCxt->getDeviceInfo().maxComputeUnits;
      CV_Assert(groupnum != 0);
  
      int dbsize = groupnum * 2 * src.elemSize();

diff --cc modules/ocl/src/gftt.cpp
Simple merge