package/elf2flt: fix riscv64 noMMU build

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/6655119961

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
1 file changed