app: nrf_cloud: Fix UUID Kconfig

CONFIG_NRF_CLOUD_CLIENT_ID_SRC_INTERNAL_UUID is only for 9160.
91x1 should use CONFIG_NRF_CLOUD_CLIENT_ID_SRC_MDM_DEVICE_UUID.

Signed-off-by: Tommi Rantanen <tommi.rantanen@nordicsemi.no>

Author: trantanen

app/prj.conf

@@ -104,7 +104,7 @@ CONFIG_NRF_CLOUD_AGNSS_FILTERED=n
 CONFIG_NRF_CLOUD_PGPS=n
 CONFIG_NRF_CLOUD_LOG_LEVEL_INF=y
 CONFIG_NRF_CLOUD_GPS_LOG_LEVEL_INF=y
-CONFIG_NRF_CLOUD_CLIENT_ID_SRC_INTERNAL_UUID=y
+CONFIG_NRF_CLOUD_CLIENT_ID_SRC_MDM_DEVICE_UUID=y
 CONFIG_NRF_CLOUD_WIFI_LOCATION_ENCODE_OPT_MAC_RSSI=y
 CONFIG_DATE_TIME=y
 CONFIG_MODEM_INFO=y