tzdata: We shouldn't override the localtime if it is valid
The code where mistakenly replacing the localtime file setting so we
end with a copy of file instead of a symbolic link. This fixes it so
now, we'll only do that in case the link is pointing to invalid data.
Change-Id: I16dfa5ea4f293c48bb396f4e23a2ea53e6c9e745 Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
