rust/qemu-api: Fix fragment-specifiers in define_property macro

For the matcher of macro, "expr" is used for expressions, while "ident"
is used for variable/function names, and "ty" matches types.

In define_property macro, $field is a member name of type $state, so it
should be defined as "ident", though offset_of! doesn't complain about
this. $type is the type of $field, since it is not used in the macro, so
that no type mismatch error is triggered either.

Fix fragment-specifiers of $field and $type.

Signed-off-by: Junjie Mao <junjie.mao@hotmail.com>
Co-developed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20241017143245.1248589-2-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

rust/qemu-api/src/device_class.rs

@@ -27,7 +27,7 @@ macro_rules! device_class_init {
 
 #[macro_export]
 macro_rules! define_property {
-    ($name:expr, $state:ty, $field:ident, $prop:expr, $type:expr, default = $defval:expr$(,)*) => {
+    ($name:expr, $state:ty, $field:ident, $prop:expr, $type:ty, default = $defval:expr$(,)*) => {
         $crate::bindings::Property {
             // use associated function syntax for type checking
             name: ::std::ffi::CStr::as_ptr($name),
@@ -38,7 +38,7 @@ macro_rules! define_property {
             ..$crate::zeroable::Zeroable::ZERO
         }
     };
-    ($name:expr, $state:ty, $field:ident, $prop:expr, $type:expr$(,)*) => {
+    ($name:expr, $state:ty, $field:ident, $prop:expr, $type:ty$(,)*) => {
         $crate::bindings::Property {
             // use associated function syntax for type checking
             name: ::std::ffi::CStr::as_ptr($name),