Settings: add marquee to Device administrators screen

Noticed while doing CTS testing that it was really hard to pick the
correct receivers to enable when you cannot see their full names.

Change-Id: I8f14d04f1037158c94d5501c115b5100456d7619
Signed-off-by: Roman Birg <roman@cyngn.com>
(cherry picked from commit 83b4a995)