rust/pvapconfig: add dead_code pragmas to suppress warnings

The ap.rs code is already prepared for possible support
for CCA mode APQNs for the Secure Execution environment.
However, this patch marks these fields and structs with
pragma allow(dead_code) to prevent warnings during cargo
build of pvapconfig.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

rust/pvapconfig/src/ap.rs

@@ -119,6 +119,7 @@ pub struct ApqnInfoEp11 {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct ApqnInfoCca {
     pub serialnr: String,
     pub mkvp_aes: String,  // may be an empty string if no MK set
@@ -129,6 +130,7 @@ pub struct ApqnInfoCca {
 pub enum ApqnInfo {
     Accel(ApqnInfoAccel),
     Ep11(ApqnInfoEp11),
+    #[allow(dead_code)]
     Cca(ApqnInfoCca),
 }
 
@@ -262,6 +264,7 @@ impl ApqnInfo {
 
 #[derive(Debug, Clone)]
 pub struct Apqn {
+    #[allow(dead_code)]
     pub name: String,
     pub card: u32,
     pub domain: u32,