UBUNTU: include modules.builtin in the binary debs

Now that the kernel is generating the list of builtin modules include
this listing in the binary debs.

Signed-off-by: Andy Whitcroft <apw@canonical.com>

(cherry picked from commit e241e53c

)
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>