src/{device,drivers}: Use 'include <stdlib.h>' when appropriate

Also, including <types.h>, is supposed to provide stdint and stddef.

Change-Id: I99918a5a77e759bc7d4192d2c3fd6ad493c70248
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33681
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

src/device/device_util.c

@@ -16,6 +16,7 @@
 #include <device/path.h>
 #include <device/pci_def.h>
 #include <device/resource.h>
+#include <stdlib.h>
 #include <string.h>
 
 /**