Comment 8 for bug 2030795

There's a bug in the python script.

DRI device 0 DMCUB F/W version: 0x0400003e
Traceback (most recent call last):
  File "/home/farr/Downloads/psr.py", line 81, in <module>
    decode_psr_support(f)
  File "/home/farr/Downloads/psr.py", line 20, in decode_psr_support
    print("○ %s [%d]" % (PSR_SUPPORT[v], v))
                         ~~~~~~~~~~~^^^
KeyError: 0

I don't really know much python. I commented the line and added as the PSR_SUPPORT[v] is error, and added new line print("o [%d]" % v).

Output is:
DRI device 0 DMCUB F/W version: 0x0400003e
o [0]
○ Sink OUI: 38-ec-11
○ resv_40f: 00
○ ID String: 00-00
○ PSR Status: 00-00-00