ARM: imx: add a legacy irqdomain for 3ds_debugboard
Call irq_alloc_descs to get the irq_base for 3ds_debugboard, and add a legacy irqdomain using the irq_base, so that the mapping between 3ds_debugboard hardware irq and Linux irq number can be dynamically handled by irqdomain. As the result, the use of MXC_BOARD_IRQ_START can be completely removed from 3ds_debugboard.c. Signed-off-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Acked-by: NDong Aisheng <dong.aisheng@linaro.org>
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