src/cpu: Use 'include <stdlib.h>' when appropriate

Change-Id: I44346594bc106eed73a1268b82f026b69e5f4512
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32821
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

src/cpu/allwinner/a10/clock.c

@@ -22,7 +22,6 @@
 #include <console/console.h>
 #include <delay.h>
 #include <lib.h>
-#include <stdlib.h>
 
 static struct a10_ccm *const ccm = (void *)A1X_CCM_BASE;
 

src/cpu/amd/family_10h-family_15h/init_cpus.h

@@ -16,7 +16,6 @@
 #ifndef INIT_CPUS_H
 #define INIT_CPUS_H
 
-#include <stdlib.h>
 #include <cpu/x86/lapic.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/amd/msr.h>

src/cpu/intel/haswell/finalize.c

@@ -15,7 +15,6 @@
  */
 
 #include <stdint.h>
-#include <stdlib.h>
 #include <arch/cpu.h>
 #include <cpu/x86/msr.h>
 #include "haswell.h"

src/cpu/intel/model_2065x/finalize.c

@@ -15,7 +15,6 @@
  */
 
 #include <stdint.h>
-#include <stdlib.h>
 #include <arch/cpu.h>
 #include <cpu/x86/msr.h>
 #include <cpu/intel/speedstep.h>

src/cpu/intel/model_206ax/finalize.c

@@ -15,7 +15,6 @@
  */
 
 #include <stdint.h>
-#include <stdlib.h>
 #include <arch/cpu.h>
 #include <cpu/x86/msr.h>
 #include <cpu/intel/speedstep.h>

src/cpu/ti/am335x/gpio.c

@@ -16,7 +16,6 @@
 #include <console/console.h>
 #include <cpu/ti/am335x/gpio.h>
 #include <stdint.h>
-#include <stdlib.h>
 
 static struct am335x_gpio_regs *gpio_regs_and_bit(unsigned int gpio,
 						  uint32_t *bit)

src/cpu/ti/am335x/uart.c

@@ -12,7 +12,6 @@
  * GNU General Public License for more details.
  */
 
-#include <stdlib.h>
 #include <types.h>
 #include <console/uart.h>
 #include <device/mmio.h>

src/cpu/x86/mtrr/mtrr.c

@@ -22,7 +22,6 @@
  */
 
 #include <stddef.h>
-#include <stdlib.h>
 #include <string.h>
 #include <bootstate.h>
 #include <commonlib/helpers.h>