package/bluez5_utils: fix mesh build with musl

when compiling with mesh support and musl toolchain the build fails
due to a missing include of limits.h for PATH_MAX in mesh-cfgtest.c.

Patch submitted upstream:
https://lore.kernel.org/linux-bluetooth/20210723081039.30396-1-bluez@heine.tech

Fixes:
http://autobuild.buildroot.net/results/20cc47f54de0b0d4bdf108c3715c590ae8ab476f/
http://autobuild.buildroot.net/results/003968b25906579dbcf5a95d1e43fec0ab504ef5/

Signed-off-by: Michael Nosthoff <buildroot@heine.tech>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 950a09fc56e76499258a843472d4fd5d1a08bf25)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/bluez5_utils/0001-tools-mesh-cfgtest-include-limits.h.patch

@@ -0,0 +1,33 @@
+From 5158827fded7cb4daf550a5956aff0c74f6c38fc Mon Sep 17 00:00:00 2001
+From: Michael Nosthoff <bluez@heine.tech>
+Date: Thu, 22 Jul 2021 21:36:13 +0200
+Subject: [PATCH BlueZ] tools/mesh-cfgtest: include limits.h
+
+mesh-cfgtest.c uses PATH_MAX so it should include limits.h.
+
+fixes compilation error when enabling mesh support with musl-based
+toolchains observed in buildroot autobuilders.
+
+http://autobuild.buildroot.net/results/20cc47f54de0b0d4bdf108c3715c590ae8ab476f/
+http://autobuild.buildroot.net/results/003968b25906579dbcf5a95d1e43fec0ab504ef5/
+
+Signed-off-by: Michael Nosthoff <buildroot@heine.tech>
+---
+ tools/mesh-cfgtest.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/tools/mesh-cfgtest.c b/tools/mesh-cfgtest.c
+index fa0474faa..116ab7f16 100644
+--- a/tools/mesh-cfgtest.c
++++ b/tools/mesh-cfgtest.c
+@@ -21,6 +21,7 @@
+ #include <ftw.h>
+ #include <getopt.h>
+ #include <libgen.h>
++#include <limits.h>
+ #include <signal.h>
+ #include <stdio.h>
+ #include <time.h>
+-- 
+2.32.0
+