radeonsi: in bind_{blend,rs}_state, only call 1 update function per if

Also don't use "key.ps.part.prolog.color_two_side" during updates
because it would depend on the order the update functions are called,
which is not a problem now, but it's a trap for the future.

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26307>
2 files changed