* opencl: add OpenCL to build.md * opencl: remove fixed issue/TODO * opencl: add link to OPENCL.md * opencl: update doc - refine tools requirement for Windows 11 arm64
* opencl: add OpenCL to build.md * opencl: remove fixed issue/TODO * opencl: add link to OPENCL.md * opencl: update doc - refine tools requirement for Windows 11 arm64