lshal: --debug omits info on parent objects.

Instead, print a short message that contains the information
on the row that it should look up.

Test: lshal --debug
Test: lshal debug -E android.hardware.health@2.0::IHealth/default
Test: lshal_test
Fixes: 160745145
Change-Id: I7d5ab9fba097c0fb0b080ec52682084c65ba9f50