MIPS - Backport .MIPS.abiflags fix to 2.25

[Matthew Fortune]

Hi Tristan,

Am I OK to backport the following patch to 2.25. It is a fix for MIPSr6
interacting with the new .MIPS.abiflags logic.

Thanks,
Matthew

Matthew Fortune <Matthew.Fortune@imgtec.com> writes:
> bfd/
>
> 	* elfxx-mips.c (update_mips_abiflags_isa): Add E_MIPS_ARCH_32R6
> 	and E_MIPS_ARCH_64R6 support.
>
> ld/testsuite/
>
> 	* ld-mips-elf/abiflags-strip10-ph.d: New file.
> 	* ld-mips-elf/mips-eld.exp: Run the new test.
>
> gas/
>
> 	* config/tc-mips.c (mips_elf_final_processing): Add INSN_ISA32R6
> 	and INSN_ISA64R6 support.
>
> gas/testsuite/
>
> 	* gas/mips/elf_arch_mips32r6.d: New file.
> 	* gas/mips/elf_arch_mips64r6.d: New file.
> 	* gas/mips/mips.exp: Run the new tests.

OK, thanks.  Backport is OK with me too FWIW, but that's Tristan's call.

Richard