src: Remove unneeded include "{arch,cpu}/cpu.h"

Change-Id: I17c4fc4e3e2eeef7c720c6a020b37d8f7a0f57a4
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29300
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/southbridge/intel/ibexpeak/lpc.c

@@ -25,7 +25,7 @@
 #include <arch/io.h>
 #include <arch/ioapic.h>
 #include <arch/acpi.h>
-#include <cpu/cpu.h>
+#include <arch/cpu.h>
 #include <elog.h>
 #include <arch/acpigen.h>
 #include <drivers/intel/gma/i915.h>