[rust] Disable clippy for rust_bindgen modules.

bindgen generated code may not pass clippy checks, so preemptively
disable clippy for these.

Bug: 162828070
Test: clippy is not called when compiling rust_bindgen library variants.
Change-Id: I9632c889417bdfd1adf96d9cfbccbe6340824205

rust/bindgen.go

@@ -177,6 +177,7 @@ func NewRustBindgen(hod android.HostOrDeviceSupported) (*Module, *bindgenDecorat
 
 	module.sourceProvider = bindgen
 	module.compiler = library
+	module.setClippy(false)
 
 	return module, bindgen
 }

rust/rust.go

@@ -1037,6 +1037,12 @@ func (mod *Module) Name() string {
 	return name
 }
 
+func (mod *Module) setClippy(clippy bool) {
+	if mod.clippy != nil {
+		mod.clippy.Properties.Clippy = proptools.BoolPtr(clippy)
+	}
+}
+
 var _ android.HostToolProvider = (*Module)(nil)
 
 func (mod *Module) HostToolPath() android.OptionalPath {