boot_sector_init() won't be used by arm/virt board, so move it from
global scope to x86 branch that uses it.
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <1556808723-226478-8-git-send-email-imammedo@redhat.com>
Tested-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>