broadcom/qpu: implement switch rules for fmin/fmax fadd/faddnf for v71

broadcom/qpu: implement switch rules for fmin/fmax fadd/faddnf for v71

They use the same opcodes, and switch between one and the other based
on raddr.

Note that the rule includes also if small_imm_a/b are used. That is
still not in place so that part is hardcoded. Would be updated later
when small immediates support for v71 gets implemented.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25450>