[ot] .github/workflows: ci: Add Earlgrey ROM_EXT CI regression

With upstream support, there are now a variety of ROM_EXT end-to-end
tests that we might expect to pass or at least be flaky. To ensure that
regressions on these more complicated tests are being caught, add a
regression run for the non-SiVal ROM_EXT environment, which most of
these tests use.

Since this is a separate job in the regression workflow it will be run
in parallel by a separate runner, and so should not increase existing CI
times (unless the time to execute all ROM_EXT test overshadows the time
for executing other existing execution environments).

Signed-off-by: Alex Jones <[email protected]>

Author: AlexJones0

.github/workflows/ci_regression.yml

@@ -31,6 +31,16 @@ jobs:
       opentitan_repo: ${{ inputs.opentitan_repo || 'lowRISC/opentitan' }}
       opentitan_ref: ${{ inputs.opentitan_ref || 'earlgrey_1.0.0' }}
 
+  earlgrey_rom_ext:
+    name: ROM_EXT
+    uses: ./.github/workflows/eg_regression.yml
+    secrets: inherit
+    with:
+      exec_env: sim_qemu_rom_ext
+      test_timeout: 150
+      opentitan_repo: ${{ inputs.opentitan_repo || 'lowRISC/opentitan' }}
+      opentitan_ref: ${{ inputs.opentitan_ref || 'earlgrey_1.0.0' }}
+
   earlgrey_sival_rom_ext:
     name: SiVal ROM_EXT
     uses: ./.github/workflows/eg_regression.yml