nv_crtc2_set_display_pitch
head1_set_display_pitch = (crtc_set_display_pitch) nv_crtc2_set_display_pitch;
head2_set_display_pitch = (crtc_set_display_pitch) nv_crtc2_set_display_pitch;
status_t nv_crtc2_set_display_pitch(void);