support: Add SystemSettingDropDownPreference from lineageos

Change-Id: I71998d4d814ea982c85b91a52ff0a11ca473e92d
Signed-off-by: Jackeagle <jackeagle102@gmail.com>
1 file changed
tree: 619a8966aff490411fbe91d77eff350f93e0333e
  1. res/
  2. src/
  3. Android.bp
  4. AndroidManifest.xml