RISC-V: PR27814, Objdump crashes when disassembling a non-ELF RISC-V binary.

2021-05-18  Job Noorman  <mtvec@pm.me>

opcodes/
    PR 27814
    * riscv-dis.c (riscv_get_disassembler): Get elf attributes only for
    the elf objects.