Add UID printing to tombstone headers

This is for Android Telemetry to be able to categorise the processes
that produce tombstones.

Bug: 129933535
Test: atest debugerd_test:TombstoneTest
Change-Id: Ie635347c9839eb58bfd27739050bd68cbdbf98da
Merged-In: Ie635347c9839eb58bfd27739050bd68cbdbf98da
(cherry picked from commit e5b7913d2c5da92c37233fef15ab3109e37d9c90)
3 files changed