package/vim: fix build for the host if NLS is disabled

package/vim: fix build for the host if NLS is disabled

host-vim started fail after gettext-tiny was introduced in:

    5367a1b package/gettext-tiny: new package

which forces to use host-gettext-tiny as gnu's host-gettext
replacament if NLS is disabled, and msgfmt from gettext-tiny's package
crashes while processing translation files, so fix it by use
'--disable-nls' for a host-vim because host variant does not require
any tranalations.

Fixes:

  http://autobuild.buildroot.net/results/0948ab6fd959940c836e06f5b632b36443a53451
  http://autobuild.buildroot.net/results/cfa6f78caea012ea4423e807ce8ceb997bc1f908
  http://autobuild.buildroot.net/results/6d417ab6a0e369b6c7023ce7d40d9b31fa0adeaf
  http://autobuild.buildroot.net/results/4369725cdea72b168dfa760d54ac038f2e0506de
  http://autobuild.buildroot.net/results/a9b72f138595e39be51b37d93bc43e0e8a39e5f6
  http://autobuild.buildroot.net/results/dadf5e71942b807bb4d18108c043ce81b349781c
  http://autobuild.buildroot.net/results/05d48cc5ef1068537d45169a4930927060e1cd7a
  http://autobuild.buildroot.net/results/993392c1213889e4e2bb9c06235d2f2f16a5cafe
  http://autobuild.buildroot.net/results/314acaa9e87e8e896a6af7d49ee0e59643ced500

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>