net-fs/netatalk: pass correct tracker-pkgconfig-version

net-fs/netatalk: pass correct tracker-pkgconfig-version

At least since 1.0, the pkgconfig version is always 1.0 or 2.0, without
the minor version affecting it (as that's semantically backwards
compatible).
As we don't have any 0.x anymore, change it to pass the found tracker
major version with .0 suffixed. This should fix the option.
Before the fix it seems it just fails to find tracker non-fatally and
disabled tracker usage despite USE=tracker being used.

Bug: https://bugs.gentoo.org/672308
Package-Manager: Portage-2.3.52, Repoman-2.3.12
Signed-off-by: Mart Raudsepp <leio@gentoo.org>