arch/io.h: Drop unnecessary include

Change-Id: I91158452680586ac676ea11c8589062880a31f91
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31692
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/amd/family_10h-family_15h/ram_calc.c

@@ -18,7 +18,6 @@
 #include <cpu/x86/msr.h>
 #include <cpu/amd/mtrr.h>
 
-#include <arch/io.h>
 #include <device/pci_ops.h>
 #include <device/device.h>
 #include <device/pci.h>

src/cpu/amd/smm/smm_init.c

@@ -14,7 +14,6 @@
  * GNU General Public License for more details.
  */
 
-#include <arch/io.h>
 #include <cpu/x86/lapic.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/mtrr.h>

src/cpu/intel/haswell/romstage.c

@@ -25,7 +25,6 @@
 #include <lib.h>
 #include <timestamp.h>
 #include <arch/acpi.h>
-#include <arch/io.h>
 #include <device/pci_def.h>
 #include <cpu/x86/lapic.h>
 #include <cbmem.h>

src/cpu/x86/lapic/apic_timer.c

@@ -18,7 +18,6 @@
 #include <console/console.h>
 #include <delay.h>
 #include <thread.h>
-#include <arch/io.h>
 #include <arch/cpu.h>
 #include <arch/early_variables.h>
 #include <cpu/intel/fsb.h>