[bssl] Add clippy::or_fun_call warning to the crate

This cl adds clippy::or_fun_call warning to the bssl
crate to opt in this check. The check is disabled by
default since [1].

This helps us avoid work as in aosp/3008114.

[1] rust-lang/rust-clippy#9829

Test: add an ok_or usage and check if there's warning
Change-Id: I0519eaddc467f91f676eb0af24e68fb69fcf0586

Author: Alice Wang

libs/bssl/src/lib.rs

@@ -15,6 +15,7 @@
 //! Safe wrappers around the BoringSSL API.
 
 #![cfg_attr(not(feature = "std"), no_std)]
+#![warn(clippy::or_fun_call)]
 
 extern crate alloc;