hw/cxl: fix physical address field in get scan media results output

hw/cxl: fix physical address field in get scan media results output

When using the mailbox command get scan media results, the scan media
restart physical address field in the ouput palyload is not 64-byte
aligned.

This patch removed the error source of the restart physical address.

The Scan Media Restart Physical Address is the location from which the
host should restart the Scan Media operation. [5:0] bits are reserved.
Refer to CXL spec r3.1 Table 8-146

Fixes: 89b5cfcc31e6 ("hw/cxl: Add get scan media results cmd support")
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/linux-cxl/20240819154206.16456-1-engguopeng@buaa.edu.cn/
Signed-off-by: peng guo <engguopeng@buaa.edu.cn>
Message-Id: <20240825102212.3871-1-engguopeng@buaa.edu.cn>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>