drm edid: fix edid data retrieving

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

Author: Nicolas Ferre

drivers/gpu/drm/drm_edid.c

@@ -1480,6 +1480,7 @@ drm_do_probe_ddc_edid(void *data, u8 *buf, unsigned int block, size_t len)
 		 * DDC monitors.
 		 */
 		ret = i2c_transfer(adapter, &msgs[3 - xfers], xfers);
+		udelay(100);
 
 		if (ret == -ENXIO) {
 			DRM_DEBUG_KMS("drm: skipping non-existent adapter %s\n",