Make the prefer property configurable

To replace soong config modules with selects.

Bug: 342006386
Test: m nothing --no-skip-soong-tests
Change-Id: I56080c9a1647a072836d4e4e50d6a5d2c1a69d28

android/configurable_properties.go

@@ -26,3 +26,9 @@ func CreateSelectOsToBool(cases map[string]*bool) proptools.Configurable[bool] {
 		resultCases,
 	)
 }
+
+func NewSimpleConfigurable[T proptools.ConfigurableElements](value T) proptools.Configurable[T] {
+	return proptools.NewConfigurable(nil, []proptools.ConfigurableCase[T]{
+		proptools.NewConfigurableCase(nil, &value),
+	})
+}