scripts: generate_rust_analyzer: Add ffi crate

Commit d072acd ("rust: use custom FFI integer types") did not
update rust-analyzer to include the new crate.

To enable rust-analyzer support for these custom ffi types, add the
`ffi` crate as a dependency to the `bindings`, `uapi` and `kernel`
crates, which all directly depend on it.

Fixes: d072acd ("rust: use custom FFI integer types")
Signed-off-by: Lukas Fischer <kernel@o1oo11oo.de>
Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250404125150.85783-2-kernel@o1oo11oo.de
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Author: o1oo11oo

scripts/generate_rust_analyzer.py

@@ -112,6 +112,12 @@ def append_sysroot_crate(
         cfg=["kernel"],
     )
 
+    append_crate(
+        "ffi",
+        srctree / "rust" / "ffi.rs",
+        ["core", "compiler_builtins"],
+    )
+
     def append_crate_with_generated(
         display_name,
         deps,
@@ -131,9 +137,9 @@ def append_crate_with_generated(
             "exclude_dirs": [],
         }
 
-    append_crate_with_generated("bindings", ["core"])
-    append_crate_with_generated("uapi", ["core"])
-    append_crate_with_generated("kernel", ["core", "macros", "build_error", "pin_init", "bindings", "uapi"])
+    append_crate_with_generated("bindings", ["core", "ffi"])
+    append_crate_with_generated("uapi", ["core", "ffi"])
+    append_crate_with_generated("kernel", ["core", "macros", "build_error", "pin_init", "ffi", "bindings", "uapi"])
 
     def is_root_crate(build_file, target):
         try: