R1350 YA105 original-kernel LED map A/B test.

Known-good minimal LED build base. No pinmux override, no WAN LED daemon, no wireless-default changes.
LED mapping decoded directly from the unit's original Linux 3.3.8 kernel gpio_led table:
  GPIO5  System blue     active-low
  GPIO7  System yellow   active-high
  GPIO8  Internet blue   active-low
  GPIO14 Internet yellow active-low

Test boot/cold boot/reboot first, then manually test the four LED classes.
