gr2d-fill: Cosmetic fix
gr2d-fill: Cosmetic fix

Separate the opcode definitions from the IOCTL definitions for better
readability.

Signed-off-by: Thierry Reding <819d67e53b6c9983dea118cea592f5214247b065@gilfi.de>

digetx/grate,grate-driver/grate,digetx/grate,grate-driver/grate