tests: Check that Icarus can parse arch sim models

Signed-off-by: David Shah <dave@ds0.me>

tests/arch/run-test.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -e
+
+echo "Running syntax check on arch sim models"
+for arch in ../../techlibs/*; do
+	find $arch -name cells_sim.v -print0 | xargs -0 -n1 -r iverilog -t null -I$arch
+done