ewah/ewok_rlw.h: add missing include (hdr-check)

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

ewah/ewok_rlw.h

@@ -19,6 +19,8 @@
 #ifndef __EWOK_RLW_H__
 #define __EWOK_RLW_H__
 
+#include "ewok.h"
+
 #define RLW_RUNNING_BITS (sizeof(eword_t) * 4)
 #define RLW_LITERAL_BITS (sizeof(eword_t) * 8 - 1 - RLW_RUNNING_BITS)