Nikon D7100: set proper whitelevels, enable 12bit mode. Fixes #11139
Nikon D7100: set proper whitelevels, enable 12bit mode. Fixes #11139

Also, according to the camera owner, there is no fully uncompressed mode.

LebedevRI/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,anarsoul/rawspeed,darktable-org/rawspeed,anarsoul/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,klauspost/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,klauspost/rawspeed,anarsoul/rawspeed