drm/i915/vblank: Change log from err to debug

Let Potential update error just be a log instead of a big error
we already have Atomic Update error log which shouts out if
something really goes wrong.

--v2
-Fix typo in commit message [Mitul]

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Link: https://lore.kernel.org/r/20250724102954.2573715-1-suraj.kandpal@intel.com

Author: surajk8

drivers/gpu/drm/i915/display/intel_vblank.c

@@ -724,9 +724,9 @@ int intel_vblank_evade(struct intel_vblank_evade_ctx *evade)
 			break;
 
 		if (!timeout) {
-			drm_err(display->drm,
-				"Potential atomic update failure on pipe %c\n",
-				pipe_name(crtc->pipe));
+			drm_dbg_kms(display->drm,
+				    "Potential atomic update failure on pipe %c\n",
+				    pipe_name(crtc->pipe));
 			break;
 		}