testing/lttng-tools: add util-linux-dev to makedeps

testing/lttng-tools/APKBUILD

@@ -8,7 +8,8 @@ url="https://lttng.org"
 arch="all"
 license="GPL2"
 depends="babeltrace"
-depends_dev="popt-dev libxml2-dev userspace-rcu-dev lttng-ust-dev kmod-dev"
+depends_dev="popt-dev libxml2-dev userspace-rcu-dev lttng-ust-dev kmod-dev
+	util-linux-dev"
 makedepends="$depends_dev bash grep coreutils automake autoconf"
 install=""
 subpackages="$pkgname-dev $pkgname-doc"