RISC-V: V vs Z?inx

[Jan Beulich]

While Zfinx is specifically documented as compatible with V, there doesn't
look to be a way to enable both at the same time. Question is why V implies
D in the first place (and similarly why Zvfh implies Zfhmin; oddly it's not
Zvfhmin which does so).

Below are all sorts of option combinations I tried, but none worked.

Jan

	.option arch, rv32ivzfinx

	.option arch, rv32iv
	.option arch, +zfinx

	.option arch, rv32izfinx
	.option arch, +v

	.option arch, rv32iv
	.option arch, +zfinx,+v

	.option arch, rv32iv
	.option arch, +v,+zfinx

	.option arch, rv32i
	.option arch, +zfinx
	.option arch, +v

	.option arch, rv32i
	.option arch, +v
	.option arch, +zfinx