xf86CrtcScreenInit performs initialization that needs to happen at ScreenInit time. (cherry picked from commit 558a4f5588ad2ec11254e0b5d6ce9515b137369e)
xf86CrtcScreenInit performs initialization that needs to happen at ScreenInit time. (cherry picked from commit 558a4f5588ad2ec11254e0b5d6ce9515b137369e)