mfd: sprd-sc27xx-spi: 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: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221112151835.39059-15-aidanmacdonald.0x0@gmail.com

drivers/mfd/sprd-sc27xx-spi.c

@@ -181,11 +181,10 @@ static int sprd_pmic_probe(struct spi_device *spi)
 	ddata->irq_chip.name = dev_name(&spi->dev);
 	ddata->irq_chip.status_base =
 		pdata->irq_base + SPRD_PMIC_INT_MASK_STATUS;
-	ddata->irq_chip.mask_base = pdata->irq_base + SPRD_PMIC_INT_EN;
+	ddata->irq_chip.unmask_base = pdata->irq_base + SPRD_PMIC_INT_EN;
 	ddata->irq_chip.ack_base = 0;
 	ddata->irq_chip.num_regs = 1;
 	ddata->irq_chip.num_irqs = pdata->num_irqs;
-	ddata->irq_chip.mask_invert = true;
 
 	ddata->irqs = devm_kcalloc(&spi->dev,
 				   pdata->num_irqs, sizeof(struct regmap_irq),