gpio: lpc32xx: disable broken to_irq support
The "to_irq" functionality is broken inside this driver since commit
76ba59f8366f ("genirq: Add irq_domain-aware core IRQ handler").
The addition of the new lpc32xx irqchip driver in 4.7, fixed the
lpc32xx platform interrupt issue.
When switching to the new lpc32xx irqchip driver, a warning appear
in the lpc32xx gpio driver: warning: "NR_IRQS" redefined.
To remove this warning (temporary solution), this patch
disables the broken "to_irq" mapping functionality support.
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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