Improve handling of deprecated EIGEN_INCLUDE_INSTALL_DIR variable
Improve handling of deprecated EIGEN_INCLUDE_INSTALL_DIR variable

ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,pasuka/eigen,pasuka/eigen,ritsu1228/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,pasuka/eigen