Debuggerd: Fix debuggerd_test

Follow-up to commit 695713e931f0436aca56be9c0dacf2a5dd4e56e7 in
bionic. Change expectations of the abort callstack.

Test: mmma system/core/debuggerd
Test: adb shell /data/nativetest/debuggerd_test/debuggerd_test32
Test: adb shell /data/nativetest64/debuggerd_test/debuggerd_test64
Change-Id: I350a29ee1713a7ebdd50f2b9bdc2078c671e22c7