drm/scdc-helper: Use consistent spelling for TMDS

The file uses inconsistent capitalization for TMDS. Since it is an
abbreviation, all uppercase is correct.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144430.19164-3-thierry.reding@gmail.com

drivers/gpu/drm/drm_scdc_helper.c

@@ -168,7 +168,7 @@ bool drm_scdc_set_scrambling(struct i2c_adapter *adapter, bool enable)
 
 	ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config);
 	if (ret < 0) {
-		DRM_ERROR("Failed to read tmds config: %d\n", ret);
+		DRM_ERROR("Failed to read TMDS config: %d\n", ret);
 		return false;
 	}
 
@@ -223,7 +223,7 @@ bool drm_scdc_set_high_tmds_clock_ratio(struct i2c_adapter *adapter, bool set)
 
 	ret = drm_scdc_readb(adapter, SCDC_TMDS_CONFIG, &config);
 	if (ret < 0) {
-		DRM_ERROR("Failed to read tmds config: %d\n", ret);
+		DRM_ERROR("Failed to read TMDS config: %d\n", ret);
 		return false;
 	}