Re-export NamedFileProtocolInfo

If `NamedFileProtocolInfo` isn't accessible, rustdoc fails to document
impl blocks of the concrete instantiations such as `FileInfo`.

Author: Bobo1239

src/proto/media/file/mod.rs

@@ -19,7 +19,10 @@ use core::ffi::c_void;
 use core::mem;
 use core::ptr;
 
-pub use self::info::{FileInfo, FileProtocolInfo, FileSystemInfo, FileSystemVolumeLabel, FromUefi};
+pub use self::info::{
+    FileInfo, FileProtocolInfo, FileSystemInfo, FileSystemVolumeLabel, FromUefi,
+    NamedFileProtocolInfo,
+};
 pub use self::{dir::Directory, regular::RegularFile};
 
 /// Common interface to `FileHandle`, `RegularFile`, and `Directory`.