[scripts] gen-dependencies.sh: only include lib*.so* files in dependency list,...

[scripts] gen-dependencies.sh: only include lib*.so* files in dependency list, to match the filtering of provides lists

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32272 3c298f89-4303-0410-b956-a3cf2f4a3e73