Added ORANGE_PI_PC2

[nopnop2002]

ORANGE_PI_2 is present, but ORANGE_PI_PC2 is not.

ORANGE_PI_2 and ORANGE_PI_PC2 are different boards.

orangepi was released in this order.
Orangepi -> Orangepi 2 -> Orangepi PC -> Orangepi PC2 -> Orangepi 3 -> Orangepi 4 -> Orangepi 5.

$ cat platformdetect.py
from adafruit_platformdetect import Detector
detector = Detector()
print("Chip id: ", detector.chip.id)
print("Board id: ", detector.board.id)

$ python3 ./platformdetect.py
Chip id:  H5
Board id:  ORANGE_PI_PC2

[makermelissa]

Thanks