[vm_payload] Adjust NDK API struct and function names

According to the comments in b/325093658

Bug: 325093658
Test: atest VmAttestationTestApp
Change-Id: I8aadd1553ef72d07e61f5cc0a7880e8fec12fd2f
diff --git a/vm_payload/src/lib.rs b/vm_payload/src/lib.rs
index 6188b21..5cc4431 100644
--- a/vm_payload/src/lib.rs
+++ b/vm_payload/src/lib.rs
@@ -37,7 +37,7 @@
     atomic::{AtomicBool, Ordering},
     Mutex,
 };
-use vm_payload_status_bindgen::attestation_status_t;
+use vm_payload_status_bindgen::AVmAttestationStatus;
 
 /// Maximum size of an ECDSA signature for EC P-256 key is 72 bytes.
 const MAX_ECDSA_P256_SIGNATURE_SIZE: usize = 72;
@@ -283,7 +283,7 @@
     challenge: *const u8,
     challenge_size: usize,
     res: &mut *mut AttestationResult,
-) -> attestation_status_t {
+) -> AVmAttestationStatus {
     // SAFETY: The caller guarantees that `challenge` is valid for reads and `res` is valid
     // for writes.
     unsafe {
@@ -310,7 +310,7 @@
     challenge: *const u8,
     challenge_size: usize,
     res: &mut *mut AttestationResult,
-) -> attestation_status_t {
+) -> AVmAttestationStatus {
     // SAFETY: The caller guarantees that `challenge` is valid for reads and `res` is valid
     // for writes.
     unsafe {
@@ -337,11 +337,11 @@
     challenge_size: usize,
     test_mode: bool,
     res: &mut *mut AttestationResult,
-) -> attestation_status_t {
+) -> AVmAttestationStatus {
     initialize_logging();
     const MAX_CHALLENGE_SIZE: usize = 64;
     if challenge_size > MAX_CHALLENGE_SIZE {
-        return attestation_status_t::ATTESTATION_ERROR_INVALID_CHALLENGE;
+        return AVmAttestationStatus::ATTESTATION_ERROR_INVALID_CHALLENGE;
     }
     let challenge = if challenge_size == 0 {
         &[]
@@ -354,7 +354,7 @@
     match service.requestAttestation(challenge, test_mode) {
         Ok(attestation_res) => {
             *res = Box::into_raw(Box::new(attestation_res));
-            attestation_status_t::ATTESTATION_OK
+            AVmAttestationStatus::ATTESTATION_OK
         }
         Err(e) => {
             error!("Remote attestation failed: {e:?}");
@@ -363,31 +363,29 @@
     }
 }
 
-fn binder_status_to_attestation_status(status: binder::Status) -> attestation_status_t {
+fn binder_status_to_attestation_status(status: binder::Status) -> AVmAttestationStatus {
     match status.exception_code() {
-        ExceptionCode::UNSUPPORTED_OPERATION => attestation_status_t::ATTESTATION_ERROR_UNSUPPORTED,
-        _ => attestation_status_t::ATTESTATION_ERROR_ATTESTATION_FAILED,
+        ExceptionCode::UNSUPPORTED_OPERATION => AVmAttestationStatus::ATTESTATION_ERROR_UNSUPPORTED,
+        _ => AVmAttestationStatus::ATTESTATION_ERROR_ATTESTATION_FAILED,
     }
 }
 
 /// Converts the return value from `AVmPayload_requestAttestation` to a text string
 /// representing the error code.
 #[no_mangle]
-pub extern "C" fn AVmAttestationResult_resultToString(
-    status: attestation_status_t,
-) -> *const c_char {
+pub extern "C" fn AVmAttestationStatus_toString(status: AVmAttestationStatus) -> *const c_char {
     let message = match status {
-        attestation_status_t::ATTESTATION_OK => {
+        AVmAttestationStatus::ATTESTATION_OK => {
             CStr::from_bytes_with_nul(b"The remote attestation completes successfully.\0").unwrap()
         }
-        attestation_status_t::ATTESTATION_ERROR_INVALID_CHALLENGE => {
+        AVmAttestationStatus::ATTESTATION_ERROR_INVALID_CHALLENGE => {
             CStr::from_bytes_with_nul(b"The challenge size is not between 0 and 64.\0").unwrap()
         }
-        attestation_status_t::ATTESTATION_ERROR_ATTESTATION_FAILED => {
+        AVmAttestationStatus::ATTESTATION_ERROR_ATTESTATION_FAILED => {
             CStr::from_bytes_with_nul(b"Failed to attest the VM. Please retry at a later time.\0")
                 .unwrap()
         }
-        attestation_status_t::ATTESTATION_ERROR_UNSUPPORTED => CStr::from_bytes_with_nul(
+        AVmAttestationStatus::ATTESTATION_ERROR_UNSUPPORTED => CStr::from_bytes_with_nul(
             b"Remote attestation is not supported in the current environment.\0",
         )
         .unwrap(),