treewide: Replace uses of "Nehalem"

The code in coreboot is actually for the Arrandale processors, which
are a MCM (Multi-Chip Module) with two different dies:

- Hillel:   32nm Westmere dual-core CPU
- Ironlake: 45nm northbridge with integrated graphics

This has nothing to do with the older, single-die Nehalem processors.
Therefore, replace the references to Nehalem with the correct names.

Change-Id: I8c10a2618c519d2411211b9b8f66d24f0018f908
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38942
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/docker/coreboot.org-status/board-status.html/tohtml.sh

@@ -471,7 +471,7 @@ EOF
 			"")
 				case $northbridge in
 					INTEL_IRONLAKE)
-						cpu_nice="Intel® 1st Gen (Nehalem) Core i3/i5/i7"
+						cpu_nice="Intel® 1st Gen (Westmere) Core i3/i5/i7"
 						socket_nice="?";;
 					RDC_R8610)
 						cpu_nice="RDC 8610"