src/{northbridge,soc}: Remove not used #include <elog.h>

Change-Id: I01e1e356936b85b186d9bd5f1c1e5e3a1157a30b
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33732
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: David Guckian
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/skylake/romstage/romstage.c

@@ -21,7 +21,6 @@
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_def.h>
-#include <elog.h>
 #include <intelblocks/fast_spi.h>
 #include <intelblocks/pmclib.h>
 #include <soc/pci_devs.h>