Use sccache on all CI platforms (KhronosGroup#2014)

MSVC on Windows was previously omitted from the list of CI platforms
that use sccache. Unify the CMAKE_CACHE_OPTIONS used for all CI
platforms.

In the case of a 100% cache hit, this cuts down the average checks time
from 8 minutes to 4 minutes, example:
https://github.com/ahesham-arm/OpenCL-CTS/actions/runs/9896449792

presubmit.sh

@@ -87,14 +87,12 @@ mkdir build
 cd build
 if [[ ${RUNNER_OS} == "Windows" ]]; then
   CMAKE_OPENCL_LIBRARIES_OPTION="OpenCL"
-  CMAKE_CACHE_OPTIONS=""
 else
   CMAKE_OPENCL_LIBRARIES_OPTION="-lOpenCL -lpthread"
-  CMAKE_CACHE_OPTIONS="-DCMAKE_C_COMPILER_LAUNCHER=sccache -DCMAKE_CXX_COMPILER_LAUNCHER=sccache"
 fi
 cmake .. -G Ninja \
       -DCMAKE_BUILD_TYPE="${BUILD_CONFIG}" \
-      ${CMAKE_CACHE_OPTIONS} \
+      -DCMAKE_CACHE_OPTIONS="-DCMAKE_C_COMPILER_LAUNCHER=sccache -DCMAKE_CXX_COMPILER_LAUNCHER=sccache" \
       -DCL_INCLUDE_DIR=${TOP}/OpenCL-Headers \
       -DCL_LIB_DIR=${TOP}/OpenCL-ICD-Loader/build \
       -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} \