Bring in riscv-arch-test that makes remaining privileged test pass.

cr1901 · cr1901 · commit 8c05664f5c9c · 2025-01-20T12:47:34.000-05:00
diff --git a/tests/riscof/riscv-arch-test b/tests/riscof/riscv-arch-test
@@ -1 +1 @@
-Subproject commit eb66181dd27ff7847e2c3a010705b13490b0bf75
+Subproject commit a5a20fe37bba8e61c16a44b45b2eed2f853f0c13
