src: Get rid of duplicated includes

Change-Id: I252a1cd77bf647477edb7dddadb7e527de872439
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29582
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/soc/intel/broadwell/lpc.c

@@ -42,9 +42,7 @@
 #include <soc/ramstage.h>
 #include <soc/rcba.h>
 #include <soc/intel/broadwell/chip.h>
-#include <arch/acpi.h>
 #include <arch/acpigen.h>
-#include <cpu/cpu.h>
 
 static void pch_enable_ioapic(struct device *dev)
 {