Backport fix for PR6362 to 3.2.x?

[Richard Sandiford]

"Kaveh R. Ghazi" <ghazi@caip.rutgers.edu> writes:
> Richard since it's your patch would you please comment on this piece?
> Is it necessary and still relevant for 3.2.x?
>
> 	* mips.c (override_options): Allow TFmode values in float
> 	registers if ISA_HAS_8CC.

No, I think it fixes a problem I introduced on trunk after 3.1 branched.
The rest of the patch wouldn't work if TFmode values weren't allowed
in float regs, so if your backport fixes the regression, this bit
shouldn't be needed.

Richard