genirq: Use new tasklet API for resend_tasklet

This converts the resend_tasklet to use the new API in
commit 12cc923f ("tasklet: Introduce new initialization API")

The new API changes the argument passed to the callback function, but
fortunately the argument isn't used so it is straight forward to use
DECLARE_TASKLET() rather than DECLARE_TASKLET_OLD().

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210123182456.6521-1-esmil@mailme.dk