msm: camera: isp: Change warning log to error rate limited log

Excessive warning logs can cause watchdog bite. Change
warn log to error rate limited log.

Change-Id: If3e74acb09b2cbbe6c09bb0cb58efc6eb73b48f6
Signed-off-by: Ravikishore Pampana <rpampana@codeaurora.org>
diff --git a/drivers/media/platform/msm/camera/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.c b/drivers/media/platform/msm/camera/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.c
index a6f1cf5..8c0c6d3 100644
--- a/drivers/media/platform/msm/camera/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.c
+++ b/drivers/media/platform/msm/camera/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.c
@@ -3187,7 +3187,7 @@
 		(event_cnt[core_idx1] &&
 		(event_cnt[core_idx1] - event_cnt[core_idx0] > 1))) {
 
-		CAM_WARN(CAM_ISP,
+		CAM_ERR_RATE_LIMIT(CAM_ISP,
 			"One of the VFE cound not generate hw event %d",
 			hw_event_type);
 		rc = -1;