fix: read_hi for cppc

CHANGELOG.md

@@ -9,7 +9,8 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### Added
 
-- support System Suspend and CPPC extension 
+- support System Suspend extension
+- support CPPC extension 
 
 ### Modified
 

src/instance.rs

@@ -359,7 +359,7 @@ impl<T: Timer, I: Ipi, R: Fence, H: Hsm, S: Reset, P: Pmu, C: Console, SU: Susp,
                     match function {
                         spec::cppc::PROBE => cppc.probe(param0),
                         spec::cppc::READ => cppc.read(param0),
-                        spec::cppc::READ_HI => cppc.read(param0),
+                        spec::cppc::READ_HI => cppc.read_hi(param0),
                         spec::cppc::WRITE => cppc.write(param0, concat_u32(param2, param1)),
                         _ => SbiRet::not_supported(),
                     }