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

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
diff --git a/include/linux/input.h b/include/linux/input.h
index 50e338d..b48d987 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -15,6 +15,7 @@
 #else
 #include <sys/time.h>
 #include <sys/ioctl.h>
+#include <sys/types.h>
 #include <asm/types.h>
 #endif