ARM/locomo: Consolidate chained IRQ handler install/remove

ARM/locomo: 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.

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Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Russell King <linux+kernel@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org