elbrus: Workaround '#pragma message' [-Werror=unknown-pragmas]

"lcc: "/usr/src/gost-engine/gosthash2012_ref.h", строка 15: ошибка:
          нераспознанная #pragma [-Werror=unknown-pragmas]
  # pragma message "Use regular implementation"
           ^"

Also, cmake does not detect lcc.