Makefile: "make kernelrelease" should show the correct full kernel version

Makefile: "make kernelrelease" should show the correct full kernel version

After commit be92e90223093ec0c6c01b59bc3ee7bd57c6d709, 'make kernelrelease'
doesn't show the correct full kernel version. This patch fixes it,
'make kernelrelease' will show the same version name with the one
you finally get.

Cc: David Rientjes <rientjes@google.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Amerigo Wang <amwang@redhat.com>
[mmarek: merged with 35a8759 and added dependency on
include/config/kernel.release]
Signed-off-by: Michal Marek <mmarek@suse.cz>