lvm2: force disable NLS support

We are going to pass --enable-nls to all autotools packages when NLS
support is enabled globally. However, lvm2 NLS support doesn't build,
and anyway lvm2 doesn't provide any useful translation files, so we
force disable NLS support for this package.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>