Add <sys/types.h> to headers included for userspace in <linux/input.h>

Signed-off-by: David Woodhouse <[e-mail]>
Signed-off-by: Vojtech Pavlik <[e-mail]>

include/linux/input.h

···
 #else
 #include <sys/time.h>
 #include <sys/ioctl.h>
+#include <sys/types.h>
 #include <asm/types.h>
 #endif