drm: Don't print warning if cursor stride isn't right
drm: Don't print warning if cursor stride isn't right

gbm_bo_create_from_egl_image() should catch this based on the
GBM_BO_USE_CURSOR_64X64 flag.  It currently doesn't so we end up with
a cursor buffer with invalid stride.

krezovic/weston,Fantu/compositor-spice,eyolfson/weston,kwm81/weston,giucam/weston,eyolfson/weston,xorgy/weston,jonnylamb/weston,giucam/weston,kwm81/weston,jonnylamb/weston,Tarnyko/weston-xdg_surface_present,mchalupa/weston,mchalupa/weston,sir-murray/weston,udoprog/weston,Gnurou/weston,Tarnyko/weston-xdg_surface_present,Fantu/compositor-spice,sir-murray/weston,krezovic/weston,Fantu/compositor-spice,udoprog/weston,xorgy/weston,Gnurou/weston