hw/s390x/css: Remove QEMU_PACKED from struct SenseId

hw/s390x/css: Remove QEMU_PACKED from struct SenseId

The uint16_t member cu_type of struct SenseId is not naturally aligned,
and since the struct is marked with QEMU_PACKED, this can lead to
unaligned memory accesses - which does not work on architectures like
Sparc. Thus remove the QEMU_PACKED here and rather copy the struct
byte by byte when we do copy_sense_id_to_guest().

Signed-off-by: Thomas Huth <[email protected]>
Message-Id: <1538036615[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Signed-off-by: Cornelia Huck <[email protected]>