refactor(el3-spmc): spmc_shmem_obj_get_emad() will never fail

Earlier validation ensures spmc_shmem_obj_get_emad() will never fail, so
trip an assertion instead of returning NULL.

Change-Id: I285f3b59150773b2404db5719753fdb240e9ed63
Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com>
1 file changed