asm: Always compile assembly code

As our assembly is just text and data that is not normally run during
tests, always compile the code. This makes build/linking failures more
apparent, even if the sections will usually be garbage collected.

Signed-off-by: Joe Richey <joerichey@google.com>

Author: josephlr

src/main.rs

@@ -31,7 +31,6 @@ mod serial;
 #[macro_use]
 mod common;
 
-#[cfg(not(test))]
 mod asm;
 mod block;
 mod boot;