Update Trusty support to account for recent libstd reorganization

Author: randomPoison

library/std/src/sys/pal/trusty/mod.rs

@@ -7,19 +7,12 @@ pub mod args;
 mod common;
 #[path = "../unsupported/env.rs"]
 pubmod env;
-#[path = "../unsupported/fs.rs"]
-pubmod fs;
-#[path = "../unsupported/io.rs"]
-pubmod io;
-#[path = "../unsupported/net.rs"]
-pubmod net;
 #[path = "../unsupported/os.rs"]
 pubmod os;
 #[path = "../unsupported/pipe.rs"]
 pubmod pipe;
 #[path = "../unsupported/process.rs"]
 pubmod process;
-pubmod stdio;
 #[path = "../unsupported/thread.rs"]
 pubmod thread;
 #[path = "../unsupported/time.rs"]

library/std/src/sys/stdio/mod.rs

@@ -19,6 +19,9 @@ cfg_if::cfg_if! {
 } else if #[cfg(target_os = "teeos")]{
 mod teeos;
 pubuse teeos::*;
+} else if #[cfg(target_os = "trusty")]{
+mod trusty;
+pubuse trusty::*;
 } else if #[cfg(target_os = "uefi")]{
 mod uefi;
 pubuse uefi::*;