manibuilder/anita: Use QEMU's -drive option over -hdb

Current QEMU wants us to specify the `raw` format explicitly and
limits write access otherwise. So use the more elaborate `-drive`
syntax.

Change-Id: If5f74592736ec4e0ef971a9a55bbdeb534358dd4
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/70915
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2 files changed