staging: octeon: Use new initialization api for tasklet

staging: octeon: Use new initialization api for tasklet

Use the new api DECLARE_TASKLET instead of DECLARE_TASKLET_OLD
introduced in commit 12cc923f1ccc ("tasklet: Introduce new
initialization API").

This change updates the tasklet initialization
process without introducing any functional changes,
ensuring the code aligns with the new API.

Signed-off-by: Abhishek Tamboli <abhishektamboli9@gmail.com>
Link: https://lore.kernel.org/r/20240914184935.848999-1-abhishektamboli9@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>