[Feature request] Support GBRG camera

[kalmard0]

I have a camera listed as follows:

$ libcamera-hello --list-cameras
Available cameras
-----------------
0 : ov5647 [2592x1944 10-bit GBRG] (/base/soc/i2c0mux/i2c@1/ov5647@36)
    Modes: 'SGBRG10_CSI2P' : 640x480 [30.00 fps - (65535, 65535)/65535x65535 crop]
                             1296x972 [30.00 fps - (65535, 65535)/65535x65535 crop]
                             1920x1080 [30.00 fps - (65535, 65535)/65535x65535 crop]
                             2592x1944 [30.00 fps - (65535, 65535)/65535x65535 crop]

I believe the ov5647 chip is supported already by PrusaLink, but the GBRG configuration is not. Obviously I would like to have it working.