MFD: ucb1x00: convert to use genirq
Convert the ucb1x00 driver to use genirq's interrupt services, rather than its own private implementation. This allows a wider range of drivers to use the GPIO interrupts (such as the gpio_keys driver) without being aware of the UCB1x00's private IRQ system. This prevents the UCB1x00 core driver from being built as a module, so adjust the configuration to add that restriction. Acked-by:Jochen Friedrich <jochen@scram.de> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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