pinctrl: iproc: use unique name for irq chip

Use the dev_name(dev) for the irqc->name so that we get unique names
when we have multiple instances of this driver.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20191003000310.17099-3-chris.packham@alliedtelesis.co.nz


Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>