travis: install packages also on cross and 32 bit

unless the build is not meant to be build only with minimal dependencies.

This is a test for fix 50819a347 ("numa: Fix numa v2 detection for cross compilation")

Signed-off-by: Petr Vorel <pvorel@suse.cz>
diff --git a/.travis.yml b/.travis.yml
index 7b8fb50..d89c435 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -94,7 +94,7 @@
     # installing / removing dependencies
     - if [ "$INSTALL_PACKAGES" = "" ]; then
           sudo apt remove $(cat .travis.packages_native | grep -v -e 'libc6' -e 'libc6-dev' -e 'linux-libc-dev' -e 'libacl1')
-      ; elif [ "$INSTALL_PACKAGES" != "cross" ]; then
+      ; else
           sudo apt install -qq $(cat .travis.packages_native)
       ; fi