Enable the 2D (GC300) and the 3D (GC2000) GPUs cores.

Link: https://lore.kernel.org/r/20200718205019.184927-14-lkundrak@v3.skSigned-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>