[tlul] Increase max devices to 32
[tlul] Increase max devices to 32

By adding KMAC, the main xbar device ports exceeds the limit 16. This
commit is to increase it to 32.

Need to check the timing result.

Signed-off-by: Eunchan Kim <cb7bc7ceb22698f298c67faa994fd9ddf3cab298@opentitan.org>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan