Add elf riscv32 and elf riscv64 as options in getLDMOption during construction of link job.
Add elf riscv32 and elf riscv64 as options in getLDMOption during construction of link job.

zig-lang/zig,raulgrell/zig,zig-lang/zig,raulgrell/zig,andrewrk/zig,raulgrell/zig,raulgrell/zig,andrewrk/zig,raulgrell/zig,zig-lang/zig