The right (yellow one in this case) one is the charge led and is connected to the PMIC, the other is connected to a GPIO and you can do whatever you want with it. If you look at the schematic you will see that the resistors are set for a current of about 5mA...
echo 359 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio359/direction
echo 0 > /sys/class/gpio/gpio359/value
To turn the LED on for example.
echo 359 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio359/direction
echo 0 > /sys/class/gpio/gpio359/value
To turn the LED on for example.
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