cpu: add missing arch/cpu.h includes

Including arch/cpu.h is needed to have the declaration for cpuid_eax.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ic22aba062117e3afa818fa2fc39cb0738e6a1612
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57725
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/cpu/amd/pi/00730F01/update_microcode.c

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <stdint.h>
+#include <arch/cpu.h>
 #include <cpu/amd/microcode.h>
 #include <commonlib/helpers.h>
 #include <console/console.h>

src/cpu/intel/common/fsb.c

@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <arch/cpu.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/tsc.h>
 #include <cpu/intel/speedstep.h>

src/cpu/intel/slot_1/l2_cache.c

@@ -24,6 +24,7 @@
  */
 
 #include <stdint.h>
+#include <arch/cpu.h>
 #include <console/console.h>
 #include <cpu/intel/l2_cache.h>
 #include <cpu/x86/cache.h>