Fixed RAM size for Nucleo-F722ZE

Author: valeros

boards/nucleo_f722ze.json

@@ -30,7 +30,7 @@
   ],
   "name": "ST Nucleo F722ZE",
   "upload": {
-    "maximum_ram_size": 196608,
+    "maximum_ram_size": 262144,
     "maximum_size": 524288,
     "protocol": "stlink",
     "protocols": [