MAG251RX Support

[domhel]

DEBUG: Scanning USB devices...
DEBUG: Found device <MSI Gaming Controller> with serial <A02019093000>

DEBUG: Interface 0 alt 0 class 3
DEBUG: Endpoint 01 0040
DEBUG: Endpoint 1 does is not of type output
DEBUG: Endpoint 02 0040
DEBUG: Endpoint 2 does is not of type input
DEBUG: Found 1 interfaces, using interface 0
DEBUG: Setting Configuration
DEBUG: Driver is usbhid
DEBUG: Special 01 b4: 01 5a 61 00 08 3d 00 00 00 00 00 00 00 00 00 00
Unexpected id combination <00B><V18>
Detected an unknown monitor. Please report the output of
'msigd --info --debug --query' as an issue and also provide
the ID (MAG...) of your monitor. Thank you!
Vendor Id:      0x1462
Product Id:     0x3fa4
Product:        MSI Gaming Controller
Serial:         A02019093000
Monitor Series: Unknown Series
LED support:    None
s140:           <00B>
s150:           <V18>
DEBUG: Special 01 b0: 01 5a 39 07 00 00 00 00 00 00 00 00 00 00 00 00
DEBUG: Special 01 b4: 01 5a 61 00 08 3d 00 00 00 00 00 00 00 00 00 00
DEBUG: Special 01 d0 62 30 30 31 30 30 30 30 30 0d: 01 d0 36 30 30 2b 0d 30 30 30 30 0d 00 00 00 00
macro_key : '000'
serial : 'BA3T020700527'
frequency : '240'
response_time : '002'
image_enhancement : '000'
brightness : '081'
contrast : '070'
sharpness : '000'
color_rgb : '0x949494'
osd_transparency : '000'
osd_timeout : '020'
DEBUG: Releasing interface 0

[couriersud]

I have added MAG251RX to master now.
It would be great if you could post the output of
./msigd --dump_mystic
and
msigd --debug --info --query
here.
Please accept my excuses for the very late addition.