mfd: rt5033: Replace irqchip mask_invert with unmask_base

Remove use of the deprecated mask_invert flag. Inverted mask
registers (where a '1' bit enables an IRQ) can be described more
directly as an unmask register.
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221112151835.39059-13-aidanmacdonald.0x0@gmail.com

drivers/mfd/rt5033.c

@@ -29,8 +29,7 @@ static const struct regmap_irq rt5033_irqs[] = {
 static const struct regmap_irq_chip rt5033_irq_chip = {
 	.name		= "rt5033",
 	.status_base	= RT5033_REG_PMIC_IRQ_STAT,
-	.mask_base	= RT5033_REG_PMIC_IRQ_CTRL,
-	.mask_invert	= true,
+	.unmask_base	= RT5033_REG_PMIC_IRQ_CTRL,
 	.num_regs	= 1,
 	.irqs		= rt5033_irqs,
 	.num_irqs	= ARRAY_SIZE(rt5033_irqs),