message: Update comments in interop.cmake
diff: # This module contains helper functions allowing to link several modules on
  # LLVM IR level and translate final module to SPIR-V format.
  # For ISPC the workflow is easy:
  -# 1. compile to .bc
  -# This bitcode file is ready to be linked with others and translated to .spv
  +# 1. compile to bitcode
  +# This bitcode file is ready to be linked with others and translated to .spv.
  # For DPC++:
  -# 1. compile source to object file using dpc++ compiler
  -# 2. extract ESIMD bitcode using clang-offload-bundler
  +# 1. extract ESIMD bitcode using clang-offload-bundler from DPC++ library
  # 3. lower extracted bitcode to real VC backend intrinsics using sycl-post-link
  # Lowered bitcode file can be linked with ISPC bitcode using llvm-link and
  # translated then to .spv with llvm-spirv.
  -# Note that we can extract bitcode during dpc++ compilation in one step
  -# instead of 1. and 2. But we assume that the most frequent case will be to link
  -# with some library which contains precompiled objects. So getting bitcode is split
  -# to two steps for more flexibility.
  -# DPC++ compiler is required for all interoperability functions
  +# Find DPCPP compiler
  set(OLD_CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH})
  list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
  find_package(dpcpp_compiler)
  @@ -190,7 +185,7 @@ function (translate_to_spirv target_name ispc_target bc_target)
  )
  endfunction()
  -# Link ISPC and ESIMD GPU modules to SPIR-V and produce libraries required for CPU
  +# Link ISPC and ESIMD GPU modules to SPIR-V
  # ispc_target: the ispc kernel target previously compiled to bitcode
  # ARGN: list of compiled DPCPP targets to link the ispc target with
  function (link_ispc_esimd ispc_target)
  