Build hard-float lib32 for mips64hf/mips64elhf

[arichardson]

Summary

This should fix linker error when building with clang+lld.

Test Plan

lib32 now builds with -mhard-float instead of -msoft-float

[brooks]

LGTM

[jhb]

Yes, I was testing this locally, though without the :=, just a plain =. I was testing it as part of a make tinderbox run though that is only on amd64 and hasn't gotten to mips, so hadn't seen breakage that would require :=.

[arichardson]

In D23229#509463, @jhb wrote:

Yes, I was testing this locally, though without the :=, just a plain =. I was testing it as part of a make tinderbox run though that is only on amd64 and hasn't gotten to mips, so hadn't seen breakage that would require :=.

Yeah I got a recursive variable definition error with = so I changed it to :=

[jhb]

share/mk/bsd.compat.mk

169 ↗

(On Diff #66902)

Ah, because this would recurse. Arguably these two assignments should probably be using :=? Your patch is fine for now though.