mfd: jz4740: Consolidate chained IRQ handler install/remove

Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.

Search and conversion was done with coccinelle:

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/jz4740-adc.c

@@ -277,8 +277,7 @@ static int jz4740_adc_probe(struct platform_device *pdev)
 
 	adc->gc = gc;
 
-	irq_set_handler_data(adc->irq, gc);
-	irq_set_chained_handler(adc->irq, jz4740_adc_irq_demux);
+	irq_set_chained_handler_and_data(adc->irq, jz4740_adc_irq_demux, gc);
 
 	writeb(0x00, adc->base + JZ_REG_ADC_ENABLE);
 	writeb(0xff, adc->base + JZ_REG_ADC_CTRL);
@@ -308,8 +307,7 @@ static int jz4740_adc_remove(struct platform_device *pdev)
 
 	irq_remove_generic_chip(adc->gc, IRQ_MSK(5), IRQ_NOPROBE | IRQ_LEVEL, 0);
 	kfree(adc->gc);
-	irq_set_handler_data(adc->irq, NULL);
-	irq_set_chained_handler(adc->irq, NULL);
+	irq_set_chained_handler_and_data(adc->irq, NULL, NULL);
 
 	iounmap(adc->base);
 	release_mem_region(adc->mem->start, resource_size(adc->mem));