core: fix stack setup at secondary core entry
core: fix stack setup at secondary core entry

stack_tmp_offset is required by secondary boot cores before
pager is initialized.

Fixes: e56a56428def ("core: sm: use stack_tmp for sm_from_nsec")
Signed-off-by: Etienne Carriere <f21bc5b8f3ea1962eb45af359f1abea6578cab94@linaro.org>
Reviewed-by: Jens Wiklander <7706914404370d7502c27a0eff493dcf491feb51@linaro.org>

pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os