util: soc: nrf: enable provisioning nRF54LM20

Enable provisioning `nRF54LM20` SoCs.

Signed-off-by: Jordan Yates <jordan@embeint.com>

Author: JordanYates

src/infuse_iot/util/soc/nrf.py

@@ -63,6 +63,8 @@ def soc(device_info):
             return "nRF54L10"
         elif version.startswith("NRF54L05"):
             return "nRF54L05"
+        elif version.startswith("NRF54LM20"):
+            return "nRF54LM20"
         else:
             raise NotImplementedError(f"Unhandled device {version}")