Move RadioButtonPreference from Settings to SettingsLib

Bug: 138620011
Test: build, make RunSettingsLibRoboTests
Change-Id: I49fc53503eb5bb3cdd6f2bae66e5d0b7808e5d3d
diff --git a/packages/SettingsLib/RadioButtonPreference/Android.bp b/packages/SettingsLib/RadioButtonPreference/Android.bp
new file mode 100644
index 0000000..136d6da
--- /dev/null
+++ b/packages/SettingsLib/RadioButtonPreference/Android.bp
@@ -0,0 +1,14 @@
+android_library {
+    name: "SettingsLibRadioButtonPreference",
+
+    srcs: ["src/**/*.java"],
+    resource_dirs: ["res"],
+
+    static_libs: [
+          "androidx.preference_preference",
+          "SettingsLibSettingsTheme",
+    ],
+
+    sdk_version: "system_current",
+    min_sdk_version: "21",
+}