[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/Android.bp b/vm_payload/Android.bp
index a745fd6..80d289b 100644
--- a/vm_payload/Android.bp
+++ b/vm_payload/Android.bp
@@ -34,7 +34,7 @@
     source_stem: "bindings",
     bindgen_flags: [
         "--default-enum-style rust",
-        "--allowlist-type=attestation_status_t",
+        "--allowlist-type=AVmAttestationStatus",
     ],
     visibility: [":__subpackages__"],
 }