Sort settings.gradle
Sort settings.gradle

Alphabetically sort the lines. I was working on a script that
creates new directories (aosp/1447121) and found this file
was relatively unsorted.

Test: gw bOS
Change-Id: If5855416b6d94deb0b3971a83ae57e976cfcef1b

androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx