ARM: dts: am335x-chiliboard: Support power button
On chiliBoard power button is connected to TPS65217. It signals power button presses by asserting interrupt output and allows to read the state by i2c bus. Handle TPS65217 interrupts and enable notifications of power button presses. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
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