[daemon] please add support for riscv64 arch

[Bo YU]

Hi,
Please add support for riscv64 arch.
https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=1010381;filename=riscv64.diff;msg=5


If you need me to do more tests on real riscv64 hardware, please let me
know,
Thank you.

BR,
Bo