Use LED to display installation status

[m-byte]

To make it easier to see installation progress without any serial cable attached, it would be great to display the installation status using the power light. The light shows up as two LEDs (blue and white) in the Linux subsystem, so this should not be too much of a challenge.

[cainmp]

@m-byte, assuming you still have interest in this project, here is how you control the led: Blue light on the NVR4