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Tiny fix for gpio serial ports (low impact)

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I enabled GPIO serial ports via armbianEnv.txt on my Orange pi One, good.


Case for port 1

But the serial port file /dev/ttyS1 comes out with wrong permissions, so it cannot be used at first.


Just needed: chmod 666 /dev/ttyS1

optional: chown root:root /dev/ttyS1



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