genirq: Remove default magic

Now that everything uses the wrappers, we can remove the default
functions. None of those functions is performance critical.

That makes the IRQ_MASKED flag tracking fully consistent.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0078023..2a6c6ee 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -440,8 +440,8 @@
 	if (!desc)
 		return;
 
-	if (WARN(!desc->irq_data.chip || !desc->irq_data.chip->irq_enable,
-	    KERN_ERR "enable_irq before setup/request_irq: irq %u\n", irq))
+	if (WARN(!desc->irq_data.chip,
+		 KERN_ERR "enable_irq before setup/request_irq: irq %u\n", irq))
 		return;
 
 	chip_bus_lock(desc);