STM32L5: update device_name

Author: jeromecoutant

tools/arm_pack_manager/index.json

@@ -479513,6 +479513,16 @@
             "vendor": "Keil",
             "version": "1.3.0"
         },
+        "algorithms": [
+            {
+                "default": true,
+                "file_name": "CMSIS/Flash/STM32L5x_512_0800.FLM",
+                "ram_size": null,
+                "ram_start": null,
+                "size": 524288,
+                "start": 134217728
+            }
+        ],
         "memories": {
             "IRAM1": {
                 "access": {
@@ -479571,6 +479581,16 @@
             "vendor": "Keil",
             "version": "1.3.0"
         },
+        "algorithms": [
+            {
+                "default": true,
+                "file_name": "CMSIS/Flash/STM32L5x_512_0800.FLM",
+                "ram_size": null,
+                "ram_start": null,
+                "size": 524288,
+                "start": 134217728
+            }
+        ],
         "memories": {
             "IRAM1": {
                 "access": {