samples: crypto: Test nrf54h20dk/nrf54h20/cpuapp/iron

Test nrf54h20dk/nrf54h20/cpuapp/iron.

Ref: NCSDK-NONE

Signed-off-by: Sebastian Bøe <[email protected]>

Author: SebastianBoe

samples/crypto/sha256/sample.yaml

@@ -122,8 +122,9 @@ tests:
       - sysbuild
       - crypto
       - ci_samples_crypto
-    platform_allow: >
-      nrf54h20dk/nrf54h20/cpuapp
+    platform_allow:
+      - nrf54h20dk/nrf54h20/cpuapp
+      - nrf54h20dk/nrf54h20/cpuapp/iron
     harness: console
     harness_config:
       type: multi_line