stm32/boards/NADHAT_PYBF405: Rename board to GARATRONIC_NADHAT_F405.

To add the manufacturer as a prefix to the board name, for consistency with
other Garatronic boards.

ports/stm32/boards/NADHAT_PYBF405/board.json → ports/stm32/boards/GARATRONIC_NADHAT_F405/board.json

@@ -6,8 +6,8 @@
     "features": [],
     "images": [],
     "mcu": "stm32f4",
-    "product": "PYBF405",
+    "product": "GARATRONIC_NADHAT_F405",
     "thumbnail": "",
-    "url": "",
+    "url": "https://shop.mchobby.be/product.php?id_product=1653",
-    "vendor": "Nadhat"
+    "vendor": "McHobby"
 }