IAR: Moved search logic to BinUtils.
The search logic for the IAR linker, librarian and related tools is moved from Modules/Compiler/IAR-FindBinUtils.cmake
to Modules/CMakeFindBinUtils.cmake
by introducing an new elseif block for the IAR toolchain.
The search logic was refactored to omit repeating itself.
Fixes: #22425 (closed)
Backport: release
Edited by Brad King