llvmpipe: Implement logic ops for the AoS path.

It was forgotten in the previous patch series, but it is trivial to
implement, based on the SoA path.

This fixes glean logicOp failures.

src/gallium/drivers/llvmpipe/lp_bld_blend_aos.c

@@ -318,7 +318,14 @@ lp_build_blend_aos(struct gallivm_state *gallivm,
       }
    }
 
-   if (!state->blend_enable) {
+   if (blend->logicop_enable) {
+      if(!type.floating) {
+         result = lp_build_logicop(gallivm->builder, blend->logicop_func, src, dst);
+      }
+      else {
+         result = src;
+      }
+   } else if (!state->blend_enable) {
       result = src;
    } else {
       boolean rgb_alpha_same = (state->rgb_src_factor == state->rgb_dst_factor && state->alpha_src_factor == state->alpha_dst_factor) || nr_channels == 1;