Fix import order in atoms.proto

The offending line was added in https://googleplex-android-review.git.corp.google.com/c/platform/frameworks/base/+/12559476/

Bug: 159796477

Test: make
Change-Id: Ie067a097aaccb783ddf24d800ef320d7cc293669
1 file changed
tree: 9f03389a4a6ab220133e27d1e79146f90252df78
  1. stats/