Hi,
It looks like only q35-acpi-dsdt.aml is needed. And, SeaBIOS never uses that file.
I think I just change the spec file to not include the aml files any more.
So, another possibility would be to move that blob into qemu.
That happened already. The file is only there to serve old qemu versions. It is basically the CONFIG_ACPI_DSDT=y equivalent for q35.
cheers, Gerd