ARM: OMAP: boards: Fix OMAP_GPIO_IRQ usage with gpio_to_irq()

The following commits change gpio-omap to use dynamic
IRQ allocation:

25db711 gpio/omap: Fix IRQ handling for SPARSE_IRQ
384ebe1 gpio/omap: Add DT support to GPIO driver

With dynamic allocation of IRQ the usage of OMAP_GPIO_IRQ
is no longer valid. We must be using gpio_to_irq() instead.

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-zoom-peripherals.c

@@ -193,7 +193,6 @@ static struct platform_device omap_vwlan_device = {
 };
 
 static struct wl12xx_platform_data omap_zoom_wlan_data __initdata = {
-	.irq = OMAP_GPIO_IRQ(OMAP_ZOOM_WLAN_IRQ_GPIO),
 	/* ZOOM ref clock is 26 MHz */
 	.board_ref_clock = 1,
 };
@@ -296,7 +295,10 @@ static void enable_board_wakeup_source(void)
 
 void __init zoom_peripherals_init(void)
 {
-	int ret = wl12xx_set_platform_data(&omap_zoom_wlan_data);
+	int ret;
+
+	omap_zoom_wlan_data.irq = gpio_to_irq(OMAP_ZOOM_WLAN_IRQ_GPIO);
+	ret = wl12xx_set_platform_data(&omap_zoom_wlan_data);
 
 	if (ret)
 		pr_err("error setting wl12xx data: %d\n", ret);