Add getrandom and sys/random.h

src/header/mod.rs

@@ -50,6 +50,7 @@ pub mod _wctype;
 pub mod arch_aarch64_user;
 pub mod arch_x64_user;
 pub mod sys_procfs;
+pub mod sys_random;
 pub mod sys_uio;
 pub mod sys_un;
 pub mod sys_utsname;