RISC-V: Also, fixed more ld testcases for --with-arch and --with-abi

RISC-V: Also, fixed more ld testcases for --with-arch and --with-abi

Well these testcases cannot be fixed by .option norvc simply, that is because
current linker needs to check mapping symbols before doing any rvc relaxations,
https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/393

Once we support the above features, we can revert this patch.