[SOL] Set 32 bits for SBF minimum enum size (rust-lang#90)

Author: LucasSte

compiler/rustc_target/src/spec/base/sbf_base.rs

@@ -59,6 +59,7 @@ SECTIONS
         requires_lto: false,
         singlethread: true,
         vendor: "solana".into(),
+        c_enum_min_bits: Some(32),
         .. Default::default()
     }
 }