switch to microchip pnp model (#361)

Author: ryanwinter

Microchip/ATSAME54-XPRO/app/nx_client.c

@@ -20,7 +20,7 @@
 #include "azure_device_x509_cert_config.h"
 #include "azure_pnp_info.h"
 
-#define IOT_MODEL_ID "dtmi:azurertos:devkit:gsg;2"
+#define IOT_MODEL_ID "dtmi:azurertos:devkit:gsgmicrochipsame54;1"
 
 #define TELEMETRY_TEMPERATURE       "temperature"
 #define TELEMETRY_PRESSURE          "pressure"