ODROID-HC4: add red/power LED control, similar to the blue led

[rpardini]

ODROID-HC4: add red/power LED control, similar to the blue led

• in the HC4, the POWER (RED) LED can be controlled just like the blue led, it is connected to GPIOAO_7
• https://wiki.odroid.com/odroid-hc4/application_note/led_control#how_to_control_the_red_power_led_applicable_for_the_odroid-hc4_only

[rpardini]

Forum post regarding this, https://forum.odroid.com/viewtopic.php?p=318255#p318255

[rpardini]

I'll close this and send a proper patch in a new PR

[rpardini]

Proper patch is #22 https://github.com/tobetter/linux/pull/22.patch

[tobetter]

Proper patch is #22 https://github.com/tobetter/linux/pull/22.patch

Thanks, the patch has been merged with small modification. https://github.com/tobetter/linux/commit/dea4bd29d6a1623c5e92ebfe527d3beb14cad728

[rpardini]

🎉