* config/tc-mips.c (insn_uses_reg): Handle the new flags
INSN2_READ_FPR_Z, INSN2_READ_GPR_D and INSN2_READ_GPR_Z.
(append_insn): Handle delay-slot filling for the new flags.
(validate_mips_insn): Handle the new arguments +a|b|c|z|Z.
(mips_ip): Handle the new arguments +a|b|c|z|Z.