There's no need to cast the last parameter of {request,free}_irq() to
"void *", as any pointer type is accepted.

Remove the superfluous casts to fix this.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>