udftools: add patch to fix build on musl

Fixes:

  http://autobuild.buildroot.net/results/e77a96bd2a73c8255fd078022b11e8c47a4c712e/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/udftools/0001-pktsetup-pktsetup.c-do-not-include-bits-types.h.patch

@@ -0,0 +1,32 @@
+From 8da4dde42cc25294819ad078432d85437e4a12ee Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+Date: Sun, 22 Apr 2018 15:05:46 +0200
+Subject: [PATCH] pktsetup/pktsetup.c: do not include <bits/types.h>
+
+This header is not a standard header, and is for example not provided
+by the musl C library.
+
+This change has been tested by building udftools against glibc, uClibc
+and musl.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+Upstream-status: https://github.com/pali/udftools/pull/16
+---
+ pktsetup/pktsetup.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/pktsetup/pktsetup.c b/pktsetup/pktsetup.c
+index 8b3df51..81ed142 100644
+--- a/pktsetup/pktsetup.c
++++ b/pktsetup/pktsetup.c
+@@ -27,7 +27,6 @@
+ #include <sys/stat.h>
+ #include <unistd.h>
+ #include <getopt.h>
+-#include <bits/types.h>
+ #include <sys/types.h>
+ #include <string.h>
+ #include <limits.h>
+-- 
+2.14.3
+