[nrf noup] samples: smp_svr: add nrf54lm20dk

adds nrf54lm20dk to sample.yaml

Signed-off-by: Mateusz Michalek <[email protected]>

Author: michalek-no

samples/subsys/mgmt/mcumgr/smp_svr/sample.yaml

@@ -16,10 +16,12 @@ tests:
       - mg100
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54l15dk/nrf54l10/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
     integration_platforms:
       - nrf52dk/nrf52832
       - nrf52840dk/nrf52840
       - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
   sample.mcumgr.smp_svr.bt_static_svc:
     harness: bluetooth
     tags: bluetooth