tests: subsys: rtt: Update pytest for nRF7120 RTT address

Use nRF54L15_M33 as device for nRF7120 as it shares similar ram region.
This enables automatic RTT symbol detection. The device shall be updated
when SEGGER adds support.

Signed-off-by: Dhanoo Surasarang <[email protected]>

Author: dhsu-nordic

tests/subsys/rtt/pytest/test_rtt.py

@@ -74,9 +74,12 @@ def test_rtt_logging(dut: DeviceAdapter):
         '[email protected]/nrf54lv10a/cpuapp': {
             'device': 'NRF54LV10A_M33',
         },
+
+        # Using nRF54L15_M33 as the device because its RAM region closely matches nRF7120.
+        # This enables automatic SEGGER RTT symbol detection by JLinkRTTLogger.
+        # Update to the official nRF7120 device name when SEGGER adds support.
         'nrf7120pdk/nrf7120/cpuapp' : {
-            'device': 'CORTEX-M33',
-            'RTTAddress': '0x20000410',
+            'device': 'nRF54L15_M33',
         },
     }