Does gem5-gcn3 support gfx906 devices？

[hang gao]

When using the dockerfile in the gem5/util/dockerfile/gcn gpu directory to create the gem5 gcn3 image, warning: Didn't detect SupportedISA: [(803), (900), (906), (908)]: can't benchmark assembly kernels appears.

Now I need to execute the v3 application of assembly code on the gfx906 device, but an error is reported and cannot be executed.