CUDA: Find CMAKE_LINKER on Windows

We use this in `Modules/Platform/Windows-NVIDIA-CUDA.cmake`, so make
sure it is available.

Modules/CMakeCUDACompiler.cmake.in

@@ -26,3 +26,5 @@ set(CMAKE_CUDA_HOST_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES "@CMAKE_CUDA_HOST_IMPLIC
 set(CMAKE_CUDA_IMPLICIT_LINK_LIBRARIES "@CMAKE_CUDA_IMPLICIT_LINK_LIBRARIES@")
 set(CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES "@CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES@")
 set(CMAKE_CUDA_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES "@CMAKE_CUDA_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES@")
+
+set(CMAKE_LINKER "@CMAKE_LINKER@")

Modules/CMakeFindBinUtils.cmake

@@ -44,6 +44,7 @@ set(_CMAKE_TOOL_VARS "")
 if("x${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_SIMULATE_ID}" STREQUAL "xMSVC"
    OR "x${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_ID}" STREQUAL "xMSVC"
    OR (CMAKE_HOST_WIN32 AND "x${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_ID}" STREQUAL "xPGI")
+   OR (CMAKE_HOST_WIN32 AND "x${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_ID}" STREQUAL "xNVIDIA")
    OR (CMAKE_GENERATOR MATCHES "Visual Studio"
        AND NOT CMAKE_VS_PLATFORM_NAME STREQUAL "Tegra-Android"))