gallium: fix windows build from params change.

This is why we can't have nice things. I'm sure there's someway
to do this with {0} but I really don't have time for that.

Fixes: 2631fd3b ("gallivm: rework lp_build_tgsi_soa to take a struct")
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
13 jobs for !1447 with gallivm-fix-windows-build in 9 minutes and 27 seconds (queued for 2 seconds)
merge request