This driver never frees the interrupt descriptors it allocates. Fix
it by using the resource managed version of irq_alloc_descs().
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: NRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>