Revert "x86: return modified setup_data only if read as memory, not as file"

Revert "x86: return modified setup_data only if read as memory, not as file"

This reverts commit e935b735085dfa61d8e6d276b6f9e7687796a3c7.

Fixes: e935b73508 ("x86: return modified setup_data only if read as memory, not as file")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Dov Murik <dovmurik@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>