Stats: updated the order of service registration

Stats need to be registered prior sensors service start

Bug: 183916090
Test: build, flash & boot
Change-Id: I4d6eb1adbb0d57e42489ec85829b777e8a27069c
(cherry picked from commit e785c01e0a53fdc6244f5bc6e59bd638b10b0f38)
2 files changed