glibc: fix path to place zdump in the tzcode package

zdump should be included in the tzcode package but is instead included
in the glibc-utils package due to an incorrect path in the recipe.

https://bugzilla.yoctoproject.org/show_bug.cgi?id=14427



Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>