pinctrl: sunxi: sun50i-h5 use platform_irq_count

platform_irq_count() is the more generic way (independent of
device trees) to determine the count of available interrupts. So
use this instead.

As platform_irq_count() might return an error code (which
of_irq_count doesn't) some additional handling is necessary.

Signed-off-by: Peng Fan <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/sunxi/pinctrl-sun50i-h5.c

···
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_irq.h>
 #include <linux/pinctrl/pinctrl.h>
 
 #include "pinctrl-sunxi.h"
···
 
 static int sun50i_h5_pinctrl_probe(struct platform_device *pdev)
 {
-	switch (of_irq_count(pdev->dev.of_node)) {
+	int ret;
+
+	ret = platform_irq_count(pdev);
+	if (ret < 0) {
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Couldn't determine irq count: %pe\n",
+				ERR_PTR(ret));
+		return ret;
+	}
+
+	switch (ret) {
 	case 2:
 		dev_warn(&pdev->dev,
 			 "Your device tree's pinctrl node is broken, which has no IRQ of PG bank routed.\n");