Recompute sector information for Nuvoton

Author: theotherjimmy

tools/arm_pack_manager/index.json

@@ -170717,7 +170717,20 @@
                 "units": 1
             }
         }, 
-        "sectors": null, 
+        "sectors": [
+            [
+                0, 
+                2048
+            ], 
+            [
+                1048576, 
+                2048
+            ], 
+            [
+                3145728, 
+                16
+            ]
+        ], 
         "vendor": "Nuvoton:18"
     }, 
     "M453YC3AE": {
@@ -172950,7 +172963,20 @@
                 "units": 1
             }
         }, 
-        "sectors": null, 
+        "sectors": [
+            [
+                0, 
+                4096
+            ], 
+            [
+                1048576, 
+                4096
+            ], 
+            [
+                3145728, 
+                16
+            ]
+        ], 
         "vendor": "Nuvoton:18"
     }, 
     "M487KIDAE": {
@@ -293077,7 +293103,20 @@
                 "units": 1
             }
         }, 
-        "sectors": null, 
+        "sectors": [
+            [
+                0, 
+                2048
+            ], 
+            [
+                1048576, 
+                2048
+            ], 
+            [
+                3145728, 
+                16
+            ]
+        ], 
         "vendor": "Nuvoton:18"
     }, 
     "NUC472JG8AE": {