Build breakage

[Andreas Gustafsson <gson%gson.org@localhost>]

Hi all,

As of source date 2019.12.12.05.00.33, the evbarm-earmv7hf build is
failing with:

  --- kern_module.o ---
  /tmp/bracket/build/2019.12.12.11.47.30-evbarm-earmv7hf/src/lib/librump/../../sys/rump/../kern/kern_module.c: In function 'module_init':
  /tmp/bracket/build/2019.12.12.11.47.30-evbarm-earmv7hf/src/lib/librump/../../sys/rump/../kern/kern_module.c:456:20: error: implicit declaration of function 'pserialize_create'; did you mean 'sysctl_create'? [-Werror=implicit-function-declaration]
    module_hook_psz = pserialize_create();
                      ^~~~~~~~~~~~~~~~~
                      sysctl_create
  cc1: all warnings being treated as errors
  *** [kern_module.o] Error code 1

and the sparc build is also failing with a similar error.
-- 
Andreas Gustafsson, gson%gson.org@localhost