ecore_drm2: Add a query for the next vblank time

I guess this is a feature, and we're deep in freeze, but:

a) this is critical for fixing T5462 properly without any side effects.
b) ecore_drm2 is all beta api
c) this should only affect wayland users

ref T5462

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/ecore_drm2/ecore_drm2_private.h b/src/lib/ecore_drm2/ecore_drm2_private.h
index 4ec2147e76..c8c2bf66c2 100644
--- a/src/lib/ecore_drm2/ecore_drm2_private.h
+++ b/src/lib/ecore_drm2/ecore_drm2_private.h
@@ -302,7 +302,7 @@ void _ecore_drm2_fb_deref(Ecore_Drm2_Fb *);
 void _ecore_drm2_fb_buffer_release(Ecore_Drm2_Output *output, Ecore_Drm2_Output_State *s);
 
 /* extern int (*sym_drmClose)(int fd); */
-/* extern int (*sym_drmWaitVBlank)(int fd, drmVBlank *vbl); */
+extern int (*sym_drmWaitVBlank)(int fd, drmVBlank *vbl);
 extern int (*sym_drmHandleEvent)(int fd, drmEventContext *evctx);
 extern void *(*sym_drmGetVersion)(int fd);
 extern void (*sym_drmFreeVersion)(void *drmver);