roccat: set the dpi list
roccat: set the dpi list

Turns out this driver never got updated for the 'new' DPI list provided by
libratbag and thus broke with bacdab259653512e06631075216f090eadc435dc when we
enforced that DPI list.

Set a fixed DPI list based on the hardcoded values we use elsewhere in this
driver.

Signed-off-by: Peter Hutterer <b9c50af7afa7642f6f854434cda9ffe54ece8b85@who-t.net>

libratbag/libratbag,whot/libratbag,whot/libratbag,libratbag/libratbag,libratbag/libratbag,whot/libratbag