binderAllocationLimits - atrace tags

Broken by recent atrace changes, but not caught by infra, due to
build/soong not including test mapping import for binder/AIDL.
.
Bug: 161393989
Test: binderAllocationLimits --gtest_filter="*Small*"
Change-Id: Ic401ee4a3031672fc880ff92f130dd8fecb22e72