nb/intel/haswell: Finalize northbridge in ramstage

There's no need to finalize the northbridge in SMM. This also makes
unification with Broadwell easier.

Tested on Asrock B85M Pro4, still boots and registers get locked.

Change-Id: I8b2c0d14a79e4fcd2e8985ce58542791cef9b1fe
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51157
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/southbridge/intel/lynxpoint/smihandler.c

@@ -273,7 +273,6 @@ static void southbridge_smi_apmc(void)
 		}
 
 		intel_pch_finalize_smm();
-		intel_northbridge_haswell_finalize_smm();
 		intel_cpu_haswell_finalize_smm();
 
 		chipset_finalized = 1;