src: Add missing include <stdlib.h>

Change-Id: I17dc2fed6c6518daf5af286788c98c049088911e
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37366
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

src/arch/x86/acpi_device.c

@@ -17,6 +17,7 @@
 #include <arch/acpigen.h>
 #include <device/device.h>
 #include <device/path.h>
+#include <stdlib.h>
 #if CONFIG(GENERIC_GPIO_LIB)
 #include <gpio.h>
 #endif

src/commonlib/storage/sdhci_adma.c

@@ -19,6 +19,7 @@
 #include <console/console.h>
 #include <delay.h>
 #include <endian.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "sdhci.h"

src/mainboard/emulation/qemu-i440fx/fw_cfg.c

@@ -12,6 +12,7 @@
  */
 
 #include <endian.h>
+#include <stdlib.h>
 #include <string.h>
 #include <smbios.h>
 #include <console/console.h>

src/mainboard/sifive/hifive-unleashed/fixup_fdt.c

@@ -14,6 +14,7 @@
  */
 
 #include <stdint.h>
+#include <stdlib.h>
 #include <string.h>
 #include <console/console.h>
 #include <soc/otp.h>

src/soc/intel/broadwell/me.c

@@ -29,6 +29,7 @@
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <device/pci_def.h>
+#include <stdlib.h>
 #include <string.h>
 #include <delay.h>
 #include <elog.h>