component/util-linux: Enable missing lsblk dependencies

lsblk is needed for neotest (see https://lab.nexedi.com/kirr/slapos/commit/7cc37e3c).
However lsblk is built only when the following dependecies are enabled:

	- libblkid
	- libmount
	- libsmartcols

	https://github.com/karelzak/util-linux/blob/v2.31-286-g8e782a839/configure.ac#L1483

we already have libblkid and libmount enabled, but libsmartcols was missing.

Enable it.

component/util-linux/buildout.cfg

@@ -29,7 +29,7 @@ configure-options =
   --disable-rename
   --disable-schedutils
   --disable-setterm
-  --disable-libsmartcols
+  --enable-libsmartcols
   --disable-switch_root
   --disable-tinfo
   --disable-tls