mb/{cavium,opencellular,roda,scaleway,ti}: Remove unused <stdlib.h>

Change-Id: Iad616e98feaebc6d5ec058fbf438ac2002a6b934
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33903
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/cavium/cn8100_sff_evb/romstage.c

@@ -18,7 +18,6 @@
 #include <soc/sdram.h>
 #include <soc/timer.h>
 #include <soc/mmu.h>
-#include <stdlib.h>
 #include <libbdk-hal/bdk-config.h>
 
 extern const struct bdk_devicetree_key_value devtree[];

src/mainboard/opencellular/elgon/romstage.c

@@ -19,7 +19,6 @@
 #include <soc/sdram.h>
 #include <soc/timer.h>
 #include <soc/mmu.h>
-#include <stdlib.h>
 #include <console/console.h>
 #include <program_loading.h>
 #include <libbdk-hal/bdk-config.h>

src/mainboard/roda/rk886ex/m3885.c

@@ -15,7 +15,6 @@
  */
 
 #include <types.h>
-#include <stdlib.h>
 #include <console/console.h>
 #include <arch/io.h>
 #include <delay.h>

src/mainboard/roda/rk9/mainboard.c

@@ -14,7 +14,6 @@
  */
 
 #include <stdint.h>
-#include <stdlib.h>
 #include <arch/io.h>
 #include <device/device.h>
 #include <drivers/intel/gma/int15.h>

src/mainboard/scaleway/tagada/bmcinfo.c

@@ -15,7 +15,6 @@
  */
 
 #include <stdint.h>
-#include <stdlib.h>
 #include <console/console.h>
 #include <console/uart.h>
 

src/mainboard/ti/beaglebone/leds.c

@@ -14,7 +14,6 @@
 
 #include <assert.h>
 #include <cpu/ti/am335x/gpio.h>
-#include <stdlib.h>
 
 #include "leds.h"