Bug#982840: linux-image-5.10.0-3-arm64: requesting scsi_debug.ko for arm64/armhf helping systemd autopkgtest

[Ryutaroh Matsumoto]

The lack of scsci_debug.ko for arm64&armhf also makes the autopkgtest-virt-qemu
testsuite fail with udisks2.
Ryutaroh