hw/mcu/nordic/nrf5340: Update syscfg names to reflect nRF5340 netcore version and signing key
diff --git a/hw/mcu/nordic/nrf5340/net_core_image/scripts/build_net_core.sh b/hw/mcu/nordic/nrf5340/net_core_image/scripts/build_net_core.sh
index 32d6f60..958537b 100755
--- a/hw/mcu/nordic/nrf5340/net_core_image/scripts/build_net_core.sh
+++ b/hw/mcu/nordic/nrf5340/net_core_image/scripts/build_net_core.sh
@@ -25,10 +25,10 @@
 # Default flags for create-image
 CREATE_IMAGE_FLAGS="timestamp"
 
-if [ -z "${MYNEWT_VAL_APPLICATION_VERSION}" ] && [ -z "${MYNEWT_VAL_APPLICATION_SIGNING_KEYS}" ]; then
+if [ -z "${MYNEWT_VAL_NRF5340_NET_APPLICATION_VERSION}" ] && [ -z "${MYNEWT_VAL_NRF5340_NET_APPLICATION_SIGNING_KEYS}" ]; then
   echo Using default create-image flags=$CREATE_IMAGE_FLAGS
 else
-  CREATE_IMAGE_FLAGS="${MYNEWT_VAL_APPLICATION_VERSION} ${MYNEWT_VAL_APPLICATION_SIGNING_KEYS}"
+  CREATE_IMAGE_FLAGS="${MYNEWT_VAL_NRF5340_NET_APPLICATION_VERSION} ${MYNEWT_VAL_NRF5340_NET_APPLICATION_SIGNING_KEYS}"
   echo Using user defined create-image flags=$CREATE_IMAGE_FLAGS
 fi