dev-amdgpu: Fix interrupt call for release mem

Both the client id and source id are incorrect for the release mem CP
packet. This changeset sets both to the correct value and adds asserts
that the value is declared in the client ID and source ID enums.

Change-Id: I4cc6c3a5f2a482e8f7dcd2a529c4a69bf71742c0
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/63177
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
3 files changed