rust/qdev: add the macro to define bit property HPET device (Rust device) needs to define the bit type property. Add a variant of define_property macro to define bit type property. Signed-off-by: Zhao Liu <zhao1.liu@intel.com> Link: https://lore.kernel.org/r/20250210030051.2562726-3-zhao1.liu@intel.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>