[CMake] Update CMake cache file for the ARM/Aarch64 cross toolchain builds. NFC.

Forcely disable the libc++ benchmarks on Windows build hosts.
The benchmark configuration currently does not support the cross builds on Windows hosts.

Also removed unnecessary CMAKE_CROSSCOMPILING CMake option.

Author: vvereschaka

clang/cmake/caches/CrossWinToARMLinux.cmake

@@ -119,7 +119,6 @@ if (NOT DEFINED CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE "Release" CACHE STRING "")
 endif()
 
-set(CMAKE_CROSSCOMPILING                    ON CACHE BOOL "")
 set(CMAKE_CL_SHOWINCLUDES_PREFIX            "Note: including file: " CACHE STRING "")
 # Required if COMPILER_RT_DEFAULT_TARGET_ONLY is ON
 set(CMAKE_C_COMPILER_TARGET                 "${TOOLCHAIN_TARGET_TRIPLE}" CACHE STRING "")
@@ -219,6 +218,11 @@ set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_CXX_ABI
 set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS      ON CACHE BOOL "")
 # Merge libc++ and libc++abi libraries into the single libc++ library file.
 set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_ENABLE_STATIC_ABI_LIBRARY          ON CACHE BOOL "")
+# Forcely disable the libc++ benchmarks on Windows build hosts
+# (current benchmark test configuration does not support the cross builds there).
+if (WIN32)
+  set(RUNTIMES_${TOOLCHAIN_TARGET_TRIPLE}_LIBCXX_INCLUDE_BENCHMARKS               OFF CACHE BOOL "")
+endif(WIN32)
 
 # Avoid searching for the python3 interpreter during the runtimes configuration for the cross builds.
 # It starts searching the python3 package using the target's sysroot path, that usually is not compatible with the build host.