soc/intel/broadwell: Use Haswell CPU headers

Now that the boards use Haswell's CPU code, Broadwell can be updated.

Change-Id: If07e5272f07edb59bb18eef1f80d7d5807b26e66
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46949
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/broadwell/northbridge.c

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <console/console.h>
+#include <cpu/intel/haswell/haswell.h>
 #include <acpi/acpi.h>
 #include <device/pci_ops.h>
 #include <stdint.h>
@@ -10,7 +11,6 @@
 #include <device/pci_ids.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 #include <soc/acpi.h>
-#include <soc/cpu.h>
 #include <soc/iomap.h>
 #include <soc/pci_devs.h>
 #include <soc/ramstage.h>