CI: limit exceptions tests to AXI and M mode

Signed-off-by: Karol Gugala <[email protected]>

.github/workflows/test-regression-exceptions.yml

@@ -10,13 +10,13 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        bus: ["axi", "ahb"]
+        bus: ["axi"]
         test: ["machine_external_ints", "dbus_store_error", "lsu_trigger_hit", "machine_external_vec_ints", "dside_pic_access_error",
                "iside_fetch_precise_bus_error", "dside_access_region_prediction_error", "cmark", "iside_core_local_unmapped_address_error",
                "dside_access_across_region_boundary", "nmi_pin_assertion", "dside_size_misaligned_access_to_non_idempotent_address",
                "dside_core_local_access_unmapped_address_error", "dbus_nonblocking_load_error", "internal_timer_ints", "ebreak_ecall", "illegal_instruction"]
         coverage: ["all", "branch", "toggle"] #TODO: add functional coverage
-        priv: ["0", "1"]
+        priv: ["0"]
     env:
       DEBIAN_FRONTEND: "noninteractive"
       CCACHE_DIR: "/opt/regression/.cache/"