ARM: imx: enable SPARSE_IRQ for imx platform
As all irqchips on imx have been changed to allocate their irq_descs, and all unneeded mach/irqs.h inclusions on imx have been cleaned up, now it's time to select SPARSE_IRQ for imx/mxc. The SPARSE_IRQ support forces irqs allocation starting from 16. All those static irq number definition for SoCs need to shift 16 to keep non-DT boot works. With all those static IRQ number and start definitions removed from mach/irqs.h, the header becomes just a container of a couple of mach-imx specific irq/fiq calls. Since mach/irqs.h is not included by asm/irq.h now, the users of mxc_set_irq_fiq needs to explicitly include mach/irqs.h themselves. Signed-off-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
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