Nikon P6000: reenable camera support, fixes #11227
Nikon P6000: reenable camera support, fixes #11227

Uncompressed 12 Bit is the only mode of this camera
according to user manual.

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