src/{drivers,device,ec}: Remove unused <stdlib.h>

Change-Id: I05422ee4b0aa5c02525ef0b4eccb4dc3ecf871e8
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32822
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/device/i2c_bus.c

@@ -11,7 +11,6 @@
  * GNU General Public License for more details.
  */
 
-#include <stdlib.h>
 #include <stdint.h>
 #include <console/console.h>
 #include <device/smbus.h>

src/device/oprom/realmode/x86.c

@@ -21,7 +21,6 @@
 #include <device/pci_ids.h>
 #include <pc80/i8259.h>
 #include <pc80/i8254.h>
-#include <stdlib.h>
 #include <string.h>
 #include <vbe.h>
 

src/device/pci_class.c

@@ -14,7 +14,6 @@
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ops.h>
-#include <stdlib.h>
 
 typedef struct {
 	const unsigned char subclass_id;

src/device/pnp_device.c

@@ -12,7 +12,6 @@
  */
 
 #include <console/console.h>
-#include <stdlib.h>
 #include <stdint.h>
 #include <arch/io.h>
 #include <device/device.h>