mtd: onenand: Pass correct pointer to IRQ handler

mtd: onenand: Pass correct pointer to IRQ handler

This was supposed to pass "onenand" instead of "&onenand" with the
ampersand.  Passing a random stack address which will be gone when the
function ends makes no sense.  However the good thing is that the pointer
is never used, so this doesn't cause a problem at run time.

Fixes: e23abf4b7743 ("mtd: OneNAND: S5PC110: Implement DMA interrupt method")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>