Revert "x86: don't let decompressed kernel image clobber setup_data"

Revert "x86: don't let decompressed kernel image clobber setup_data"

This reverts commit eac7a7791bb6d719233deed750034042318ffd56.

Fixes: eac7a7791b ("x86: don't let decompressed kernel image clobber setup_data")
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>