coconut-QEMU IGVM patch

Hi Vaishali,

In coconut's QEMU fork there is this commit [1] that, IIUC, is not
available in upstream QEMU.
If so, is there any plan of upstreaming it?

Thanks,
Luigi

[1] https://github.com/coconut-svsm/qemu/commit/d313e671e547927919994a82955a46965d45e72a