memory: tegra20-emc: Drop redundant platform_get_irq() error printk

platform_get_irq() already prints error message, so duplicating it is
redundant. The message about "need of updating DT" makes no sense,
because this code was there since beginning.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

drivers/memory/tegra/tegra20-emc.c

···
 	int irq, err;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "please update your device tree\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	emc = devm_kzalloc(&pdev->dev, sizeof(*emc), GFP_KERNEL);
 	if (!emc)