Merge pull request #5354 from LMESTM/flash_activate

Activate FLASH hal support on 2 STM32 boards

Author: 0xc0170

targets/targets.json

@@ -1546,7 +1546,7 @@
             }
         },
         "detect_code": ["0833"],
-        "device_has_add": ["ANALOGOUT", "LOWPOWERTIMER", "SERIAL_FC", "SERIAL_ASYNCH", "TRNG"],
+        "device_has_add": ["ANALOGOUT", "LOWPOWERTIMER", "SERIAL_FC", "SERIAL_ASYNCH", "TRNG", "FLASH"],
         "release_versions": ["2", "5"],
         "device_name": "STM32L072CZ"
     },
@@ -1600,7 +1600,7 @@
         "supported_form_factors": ["ARDUINO"],
         "detect_code": ["0764"],
         "macros_add": ["USBHOST_OTHER"],
-        "device_has_add": ["ANALOGOUT", "CAN", "LOWPOWERTIMER", "SERIAL_FC", "TRNG"],
+        "device_has_add": ["ANALOGOUT", "CAN", "LOWPOWERTIMER", "SERIAL_FC", "TRNG", "FLASH"],
         "release_versions": ["2", "5"],
         "device_name": "STM32L475VG"
     },