util/sconfig: Add helper function for allocating memory

Add a helper function s_alloc (sconfig alloc) that allocates memory
using calloc to get 0 initialized memory and checks to ensure it is
not NULL.

BUG=b:80081934

Change-Id: I56a70cf4865c50ed238226ace86e867bb1ec53db
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/26738
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed