mfd: rohm-bd71828: 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>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221112151835.39059-11-aidanmacdonald.0x0@gmail.com

drivers/mfd/rohm-bd71828.c

@@ -413,9 +413,8 @@ static struct regmap_irq_chip bd71828_irq_chip = {
 	.irqs = &bd71828_irqs[0],
 	.num_irqs = ARRAY_SIZE(bd71828_irqs),
 	.status_base = BD71828_REG_INT_BUCK,
-	.mask_base = BD71828_REG_INT_MASK_BUCK,
+	.unmask_base = BD71828_REG_INT_MASK_BUCK,
 	.ack_base = BD71828_REG_INT_BUCK,
-	.mask_invert = true,
 	.init_ack_masked = true,
 	.num_regs = 12,
 	.num_main_regs = 1,
@@ -430,9 +429,8 @@ static struct regmap_irq_chip bd71815_irq_chip = {
 	.irqs = &bd71815_irqs[0],
 	.num_irqs = ARRAY_SIZE(bd71815_irqs),
 	.status_base = BD71815_REG_INT_STAT_01,
-	.mask_base = BD71815_REG_INT_EN_01,
+	.unmask_base = BD71815_REG_INT_EN_01,
 	.ack_base = BD71815_REG_INT_STAT_01,
-	.mask_invert = true,
 	.init_ack_masked = true,
 	.num_regs = 12,
 	.num_main_regs = 1,