Tobias Kahlki authored Feb 22, 2024 and Tobias Kahlki committed Oct 22, 2024

This adds level interrupt support to the pca953x driver. In the IRQ routine,
the input status register is compared to the irq_trig_level_high and
irq_trig_level_low parameters. If the value from the input status register
aligns with one of the parameters, a level interrupt is issued.
After processing all nested interrupts, the pending function is called again,
to determine if the level interrupt condition is still active. If this is the
case, the nested interrupts are processed again.