tests/functional/hppa: Add a CD-ROM boot test for qemu-system-hppa

tests/functional/hppa: Add a CD-ROM boot test for qemu-system-hppa

Add a test which boots a HP-UX firmware upgrade CD-ROM. It exercise
the PCI LSI53C895A SCSI controller. The ISO image comes from:
https://web.archive.org/web/20101204061612/http://ftp.parisc-linux.org/kernels/712/PF_C7120023
The test is very quick, less than 3s.

Based on an old patch from Philippe that has been posted here:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg651012.html

Suggested-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
[thuth: Adjusted the patch to the functional framework,
        and adjusted the commit message]
Message-ID: <20250918122447.105861-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>