IServiceManager: Improve getService responsiveness in absence of service

Now blocks for 4 seconds worst case instead of 5 seconds.
Some android devices may not have all the normal android phone services.

Test: Wear device on feldspar-dev
Bug: 33086228
Change-Id: Id83fc8cd6b657b53ef78823a460d5fba4a522ab4
(cherry picked from commit 6456e448)