ARM: dts: aspeed: everest: Add pcie cable card indicator leds

These are leds on the IBM proprietary PCIE cards called cable cards.
Cable cards have 2 ports on them and each port has an indicator led.

Signed-off-by: Vishwanatha Subbanna <[email protected]>
Signed-off-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: vishwabmc