Exclude bionic private headers from include path

Change-Id: I8b1269a739a690af91c63fa0f7f8f01d2d43bb97
diff --git a/libutils/Android.mk b/libutils/Android.mk
index 2d77ef2..0c8625c 100644
--- a/libutils/Android.mk
+++ b/libutils/Android.mk
@@ -93,7 +93,7 @@
 LOCAL_CFLAGS += -Werror
 
 LOCAL_C_INCLUDES += \
-		bionic/libc/private \
+		bionic/libc \
 		external/zlib
 
 LOCAL_STATIC_LIBRARIES := \