Forward port AM/PM Style Settings

Change-Id: I1de2f7a1ec0deeecc9c9dfff3a6840f6523c12b0

Author: lion0738 <lion0738@naver.com>
Original Commit: https://github.com/lion0738/android_packages_apps_Settings/commit/124ae732e7c67011098eab4d6cf266703d8b9c9e