Launcher3: Add back OmniPreferenceTheme

After https://github.com/omnirom/android_packages_apps_Launcher3/commit/2e19e736bd49e9cb570e65154ef724a68195e14f

Change-Id: I1a72b1cdd676119d30638e9bc196d0236252e001
Signed-off-by: micky387 <mickaelsaibi@free.fr>
1 file changed