net: 3com: 3c59x: Switch to irq_get_nr_irqs()

Use the irq_get_nr_irqs() function instead of the global variable
'nr_irqs'. Prepare for changing 'nr_irqs' from an exported global
variable into a variable with file scope.

Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/all/[email protected]

Author: bvanassche

drivers/net/ethernet/3com/3c59x.c

@@ -1302,7 +1302,7 @@ static int vortex_probe1(struct device *gendev, void __iomem *ioaddr, int irq,
 	if (print_info)
 		pr_cont(", IRQ %d\n", dev->irq);
 	/* Tell them about an invalid IRQ. */
-	if (dev->irq <= 0 || dev->irq >= nr_irqs)
+	if (dev->irq <= 0 || dev->irq >= irq_get_nr_irqs())
 		pr_warn(" *** Warning: IRQ %d is unlikely to work! ***\n",
 			dev->irq);