package/bluez5_utils: fix mesh build with musl

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>