mfd: da9063: Replace DA9063_NUM_IRQ with ARRAY_SIZE

Replace DA9063_NUM_IRQ macro which is not used anywhere with
plain ARRAY_SIZE().
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/da9063-irq.c

@@ -94,7 +94,7 @@ static const struct regmap_irq da9063_irqs[] = {
 static const struct regmap_irq_chip da9063_irq_chip = {
 	.name = "da9063-irq",
 	.irqs = da9063_irqs,
-	.num_irqs = DA9063_NUM_IRQ,
+	.num_irqs = ARRAY_SIZE(da9063_irqs),
 	.num_regs = 4,
 	.status_base = DA9063_REG_EVENT_A,
 	.mask_base = DA9063_REG_IRQ_MASK_A,

include/linux/mfd/da9063/core.h

@@ -72,9 +72,6 @@ enum da9063_irqs {
 	DA9063_IRQ_GPI15,
 };
 
-#define DA9063_IRQ_BASE_OFFSET	0
-#define DA9063_NUM_IRQ		(DA9063_IRQ_GPI15 + 1 - DA9063_IRQ_BASE_OFFSET)
-
 struct da9063 {
 	/* Device */
 	struct device	*dev;