disp: msm: sde: Remove error log for invalid dspp in hist irq

Change moves error log to debug log for invalid dspp when process
histogram interrupt, that also removes error logs from userspace
by returning ENODEV.

Change-Id: Ib26b42668ba9e9597cd6eef75d87e679f2d3422f
Signed-off-by: Xu Yang <[email protected]>

msm/sde/sde_color_processing.c

@@ -3750,9 +3750,8 @@ int sde_cp_hist_interrupt(struct drm_crtc *crtc_drm, bool en,
 	}
 
 	if (!hw_dspp) {
-		DRM_ERROR("invalid dspp\n");
-		ret = -EPERM;
-		goto exit;
+		DRM_DEBUG_DRIVER("invalid dspp\n");
+		return -ENODEV;
 	}
 
 	irq_idx = sde_core_irq_idx_lookup(kms, SDE_IRQ_TYPE_HIST_DSPP_DONE,