Nikon 1 J1: set whitelevel and mode. Fixes #11146
Nikon 1 J1: set whitelevel and mode. Fixes #11146

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