UPSTREAM: netfilter: nftables: rename set element data activation/deactivation functions

commit f8bb7889 upstream.

Rename:

- nft_set_elem_activate() to nft_set_elem_data_activate().
- nft_set_elem_deactivate() to nft_set_elem_data_deactivate().

To prepare for updates in the set element infrastructure to add support
for the special catch-all element.

Bug: 299922216
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 6b880f3b)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I232be578ff3574b4d175fa7a10e962518652cdb4