ARM: sunxi: dt: Convert to the new irq controller compatibles

Switch the device tree to the new compatibles introduced in the irqchip drivers
to have a common pattern accross all Allwinner SoCs.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>