Merge pull request #1559 from YosysHQ/efinix_test_fix

Fix for non-deterministic test

tests/arch/efinix/mux.ys

@@ -36,6 +36,6 @@ proc
 equiv_opt -assert -map +/efinix/cells_sim.v synth_efinix # equivalency check
 design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
 cd mux16 # Constrain all select calls below inside the top module
-select -assert-count 12 t:EFX_LUT4
+select -assert-max 12 t:EFX_LUT4
 
 select -assert-none t:EFX_LUT4 %% t:* %D