qemuimg2disk currently only builds correctly for x86_64

[nshalman]

Expected Behaviour

It should build for all supported architectures.

Current Behaviour

https://github.com/tinkerbell/hub/runs/3830474226#step:9:3870

Possible Solution

Make it more agnostic about how it finds libc.

[mmlb]

The gha run link takes me to all the steps, can you detail which step name you meant?

[mmlb]

Its "CI checks".