Update EmulatedUserHal to use UserHalHelper native library.

Bug: 150409377
Fixes: 167588307
Test: Tested using lshal commands in go/user-hal-emulation.

Change-Id: I79486a715c92111d3d6f5c011b7e1cd8c5501c25
Merged-In: I4ba2202e28ef9260b38ebbf21083d55d7aa07fc9
(cherry picked from commit 92ad8215e7db04f6f43e1575ebe603d023b7eb9d)
4 files changed