Add missing ${extra_cmake_args} (llvm#4603) (llvm#4645)

Author: Salinas, David

llvm/runtimes/CMakeLists.txt

@@ -584,7 +584,8 @@ if(build_runtimes)
           INSTALL_COMMAND ""
           CMAKE_ARGS -DCMAKE_PREFIX_PATH=${CMAKE_BINARY_DIR}/lib/cmake
                      -DROCM_DEVICE_LIBS_BITCODE_INSTALL_LOC_NEW=${ROCM_DEVICE_LIBS_BITCODE_INSTALL_LOC}
-                     -DROCM_DEVICE_LIBS_BITCODE_INSTALL_LOC_OLD=amdgcn)
+                     -DROCM_DEVICE_LIBS_BITCODE_INSTALL_LOC_OLD=amdgcn
+                     ${extra_cmake_args})
       endif()
     endif()