drm/sti: Store correct CRTC index in events
drm/sti: Store correct CRTC index in events

A negative pipe causes a special case to be triggered for drivers that
don't have proper VBLANK support. STi does support VBLANKs, so there is
no need for the fallback code.

Cc: Benjamin Gaignard <6ee0a5bd5732730b243a6755a8505d5db9232205@linaro.org>
Cc: Vincent Abriou <c7c94f60d544985b756f117e3ec96ca87688c906@st.com>
Signed-off-by: Thierry Reding <3055038c414aef68bf32c33b8118623e7554e0f2@nvidia.com>
Reviewed-by: Vincent Abriou <c7c94f60d544985b756f117e3ec96ca87688c906@st.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs