Exynos4: Fix build

Change-Id: Idb327b37156e2014a34a8831ce6d60769e3217af
diff --git a/exynos4/hal/libhwjpeg/Android.mk b/exynos4/hal/libhwjpeg/Android.mk
index 21a99fb..7b288fa 100644
--- a/exynos4/hal/libhwjpeg/Android.mk
+++ b/exynos4/hal/libhwjpeg/Android.mk
@@ -16,6 +16,7 @@
 include $(CLEAR_VARS)
 
 LOCAL_C_INCLUDES := $(LOCAL_PATH) \
+    bionic/libc/include \
 	$(LOCAL_PATH)/../include
 
 LOCAL_SRC_FILES:= \