cmake CMAKE_HIP_ARCHITECTURES examples

LLNL/SAMRAI host-configs/toss_4_x86_64_ib_cray/amdclang-rocm-6.2.1-gfx942-raja.cmake :32 

set(CMAKE_HIP_ARCHITECTURES "gfx942" CACHE STRING "")

mkiol/dsnote cmake/whispercpp.cmake :145 

list(JOIN CMAKE_HIP_ARCHITECTURES "\\\\\\\\\\;" HIP_ARCHS_STRING)

lattice/quda lib/targets/hip/target_hip.cmake :96 

set_target_properties(quda PROPERTIES HIP_ARCHITECTURES ${CMAKE_HIP_ARCHITECTURES})