53602e6193
Fixes: https://github.com/llvm/llvm-project/issues/65104 When a user assigns devices to target regions it may happen that different identifiers will map onto the same id within different plugins. This will lead to situations where callbacks will become much harder to read, as ambiguous identifiers are reported. We fix this by collecting the index-offset upon general RTL initialization. Which in turn, allows to calculate the unique, user-observable device id.