mfd: tps65217: Specify the IRQ name

TPS65217 MFD is an interrupt controller and MFD slave devices like
tps65217-charger and tps65217-pwrbutton request an interrupt to handle
each HW event.

Currently, TPS65217 IRQ name is not defined, so the result is as below.

root@arm:~# cat /proc/interrupts
...
182:          0      INTC   7 Level     tps65217-irq
183:          0         -   1 Edge      tps65217-charger
185:          0         -   2 Edge      tps65217_pwrbutton

This patch specifies the name of the interrupt controller.

182:          0      INTC   7 Level     tps65217-irq
183:          0  tps65217   1 Edge      tps65217-charger
185:          0  tps65217   2 Edge      tps65217_pwrbutton

Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/tps65217.c

@@ -105,6 +105,7 @@ static void tps65217_irq_disable(struct irq_data *data)
 }
 
 static struct irq_chip tps65217_irq_chip = {
+	.name			= "tps65217",
 	.irq_bus_lock		= tps65217_irq_lock,
 	.irq_bus_sync_unlock	= tps65217_irq_sync_unlock,
 	.irq_enable		= tps65217_irq_enable,