[core] Fix compilation on Linux

builder/family/beken-72xx.py

@@ -288,6 +288,7 @@ queue.AddLibrary(
     base_dir=ROOT_DIR,
     srcs=[
         "+<os/**/*.c>",
+        "-<os/platform_stub.c>",
     ],
     includes=[
         "+<os/*>",

builder/utils/flash.py

@@ -64,7 +64,7 @@ def env_add_flash_layout(env: Environment, board: PlatformBoardConfig):
             length = int(length, 16)
             defines[f"FLASH_{name}_OFFSET"] = f"0x{offset:06X}"
             defines[f"FLASH_{name}_LENGTH"] = f"0x{length:06X}"
-            fal_items += f"FAL_PART_TABLE_ITEM({name.lower()},{name})"
+            fal_items += f"FAL_PART_TABLE_ITEM({name.lower()}, {name})"
             flash_size = max(flash_size, offset + length)
         defines["FLASH_LENGTH"] = f"0x{flash_size:06X}"
         # for "root" partition