interrupt driven spaceagon - #450
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buttons, joystick and touch running on interrupts. PMIC status read limited to rate of PMIC ADC (1Hz)
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buttons, joystick and touch running on interrupts. latch up issue fixed by checking the individual pin state for touch (ls1) and button (button5) interrupt pins if the interrupt is still low after checking everything else.
PMIC status read limited to rate of PMIC ADC (1Hz) to improve i2c useage
also fix #444 by adding a try catch around the touch IC first use. if this fails disable the IRQ on the touch int ePin to allow SAO to be used without interference.